Publications

H. P. Langtangen, Kent-A. Mardal, and P. Røtnes. Escaping the Zombie Threat by Mathematics, In: Zombies in the Academy: living death in higher education, ed. by Andrew Whelan, Chris Moore and Ruth Walker. University of Chicago Press, chap. 3.6 , pp. x-y, 2013.

H. P. Langtangen. A Primer on Scientific Programming with Python, Springer (third edition), 2012.

O. Al-Khayat and H. P. Langtangen. Computational aspects of multiscale simulation with the lumped particle framework, Communications in Computational Physics 12(4):1257-1274, 2012.

J. B. Haga, H. P. Langtangen, and H. Osnes. A parallel block preconditioner for large scale poroelasticity with highly heterogeneous material parameters, Computational Geosciences 16(3):723-734, 2012.

H. P. Langtangen. A FEniCS tutorial, In: Automated Solution of Differential Equations by the Finite Element Method, ed. by Logg, Anders and Mardal, Kent-Andre and Wells, Garth N.. Springer, chap. 1, pp. 1-70. (ISBN: 978-3-642-23098-1), 2012.

M. Mortensen, Kent-A. Mardal, and H. P. Langtangen. Simulation of transitional flows, In: Automated Solution of Differential Equations by the Finite Element Method, ed. by Logg, Anders and Mardal, Kent-Andre and Wells, Garth N.. Springer, vol. 84, chap. 22, pp. 419-438. Lecture Notes in Computational Science and Engineering. (ISBN: 978-3-642-23098-1), 2012.

M. Mortensen and H. P. Langtangen. Flexible Software Tools for Computational Turbulence, In: Proceedings of the 25th Nordic Seminar on Computational Mechanics (NSCM-25), ed. by Persson, K. and Revstedt, J. and Sandberg, G. and Wallin, M. , Lund University, Lund University, 2012.

Kent-A. Mardal and H. P. Langtangen. Will FEniCS fly?, FEniCS 12 workshop, 2012.

Kent-A. Mardal, H. P. Langtangen, and P. Røtnes. Are zombies a threat to mankind?, Invited talk for the opening of "RF kjelleren" at the University of Oslo , 2012.

Karen-H. Støverud, V. Haughton, H. P. Langtangen, and Kent-A. Mardal. CSF Flow Dynamics: Effects of Viscosity and Inertia, ANSR 2012, New York, 2012.

H. P. Langtangen and M. Mortensen. Flexible Specification of Large Systems of Nonlinear PDEs, Keynote talk at the 2nd HPC^3 Workshop on High-Performance Computing, KAUST, Saudi-Arabia , 2012.

H. P. Langtangen, Kent-A. Mardal, and P. Røtnes. Escaping the Zombie Threat by Mathematics, Preprint, 2012.

H. P. Langtangen. A Primer on Scientific Programming with Python, Springer (second edition), 2011.

O. Al-Khayat, A. M. Bruaset, and H. P. Langtangen. Particle collisions in a lumped particle model , Communications in Computational Physics 10(4):823-843, 2011.

J. B. Haga, H. Osnes, and H. P. Langtangen. On the causes of pressure oscillations in low-permeable and low-compressible porous media, International Journal for Numerical and Analytical Methods in Geomechanics(online), 2011.

J. B. Haga, H. Osnes, and H. P. Langtangen. Efficient block preconditioners for the coupled equations of pressure and deformation in highly discontinuous media, International Journal for Numerical and Analytical Methods in Geomechanics 35(13):1466-1482, 2011.

S. Linge, V. Haughton, A. E. Løvgren, Kent-A. Mardal, A. Helgeland, and H. P. Langtangen. Effect of tonsilar herniation on cyclic CSF flow studied with computational flow analysis, American Journal of Neuroradiology 32(5):1474-1481, 2011.

M. T. Sletholt, J. E. Hannay, D. Pfahl, and H. P. Langtangen. What do We Know About Agile Practices in Scientific Software Development?, Computing in Science and Engineering, 14(2):24 - 37, 2011.

K. Valen-Sendstad, Kent-A. Mardal, M. Mortensen, B. A. P. Reif, and H. P. Langtangen. Direct Numerical Simulation of Transitional Flow in a Patient–Specific Intracranial Aneurysm, Journal of Biomechanics 44(16):2826-2832, 2011.

M. T. Sletholt, J. E. Hannay, D. Pfahl, H. C. Benestad, and H. P. Langtangen. A Literature Review of Agile Practices and Their Effects in Scientific Software Development, In: Proceedings of SE-CSE11, ed. by J. Carver, pp. 1-9, , 2011.

K. Valen-Sendstad, Kent-A. Mardal, M. Mortensen, B. A. P. Reif, and H. P. Langtangen. On The Complexity of Stationary Flow in Patient–Specific Aneurysms, In: MekIT'11 Sixth national conference on Computational Mechanics, ed. by Bjørn Skallerud and Helge I. Andersson, pp. 379-392, tapir academic press, 2011.

K. Valen-Sendstad, Kent-A. Mardal, M. Mortensen, B. A. P. Reif, and H. P. Langtangen. Direct Numerical Simulation of Transitional Flow in a Patient-Specific MCA Aneurysm, In: Proceedings of the ASME 2011 Summer Bioengineering Conference, ed. by , , 2011.

K. Valen-Sendstad, M. Mortensen, Kent-A. Mardal, B. A. P. Reif, and H. P. Langtangen. Investigations of Transistional flows using image based hemodynamics, In: 8th International Conference on CFD in Oil & Gas, Metallurgical and Process Industries, ed. by , , 2011.

H. P. Langtangen. Kaos i hjernen - ny innsikt gjennom simuleringer, University of Oslo 1-day seminar: Realister invaderer helsevesenet, 2011.

H. P. Langtangen. Abnormal flows in the brain and the spine: How to better understand diseases by computations, Talk at the Computational Life Science seminar, University of Oslo, 2011.

H. P. Langtangen. Kaos i hjernen - ny innsikt gjennom simuleringer, Talk at Fysikkforeningen, 2011.

K. Valen-Sendstad, Kent-A. Mardal, M. Mortensen, H. P. Langtangen, B. A. P. Reif, and D. A. Steinman. 'Turbulence' in Cerebral Aneurysms, CBC Workshop on Biomechanics, 17-18 November, 2011.

K. Valen-Sendstad, Kent-A. Mardal, M. Mortensen, B. A. P. Reif, and H. P. Langtangen. Why blood flow in the vicinity of aneurysms is difficult to compute, Talk at CBC Workshop on CBC Key Topics, 2011.

K. Valen-Sendstad, Kent-A. Mardal, M. Mortensen, B. A. P. Reif, and H. P. Langtangen. Computational Cerebral Hemodynamics, The Norwegian Defence Research Establishment, 2011.

K. Valen-Sendstad, Kent-A. Mardal, M. Mortensen, B. A. P. Reif, and H. P. Langtangen. Simulation Methodology for Cerebral Blood Flow, Biomedical Simulation Lab, Institute of Biomaterials and Biomedical Engineering at the University of Toronto , 2011.

K. Valen-Sendstad, Kent-A. Mardal, M. Mortensen, B. A. P. Reif, and H. P. Langtangen. Direct Numerical Simulation of Transitional Flow in Patient–Specific Intracranial Aneurysms, ASME 2011 Summer Bioengineering Conference, 2011.

Kent-A. Mardal, A. Logg, H. P. Langtangen, and G. Wells. FEniCS: An Attempt to Combine Simplicity, Generality, Efficiency and Reliability, Python-based Software for Solving Partial Differential Equations Minisymposium at SIAM Conference on Computational Science and Engineering, 2011.

Kent-A. Mardal, Karen-H. Støverud, V. Haughton, S. Linge, H. P. Langtangen, G. Rutkowska, and I. N. Drøsdal. Cerebrospinal fluid flow in the upper cervical canal in patients with the Chiari I malformation, 1ST CSF Hydrodynamics Symposium, 2011.

Kent-A. Mardal, K. Valen-Sendstad, M. S. Alnæs, M. Mortensen, H. P. Langtangen, and B. A. P. Reif. The finite element library FEniCS and simulation of blood flow in cerebral aneurysms, Talk at CSB Seminar, University of Stuttgart, 2011.

A. Tveito, H. P. Langtangen, B. F. Nielsen, and X. Cai. Elements of Scientific Computing, Springer, 2010.

O. Al-Khayat, A. M. Bruaset, and H. P. Langtangen. A lumped particle modeling framework for simulating particle transport in fluids , Communications in Computational Physics 8(1):115-142, 2010.

J. K. Nilsen, X. Cai, B. Høyland, and H. P. Langtangen. Simplifying the parallelization of scientific codes by a function-centric approach in Python, Computational Science & Discovery 3(0):015003, 2010.

S. Glimsdal, G. Pedersen, H. P. Langtangen, V. Shuvalov, and H. Dypvik. The Mjølnir Tsunami, In: The Mjølnir Impact Event and its Consequences, ed. by Tsikalas, Filippos and Dypvik, Henning and Smelror, Morten. Springer Berlin Heidelberg, chap. 10, pp. 257-271, 2010.

J. T.-C. Yeh, X. Cai, H. P. Langtangen, J. Zhu, and Chuen-F. Ni. Parallel computing engines for subsurface imaging technologies, In: Advanced Computational Infrastructures for Parallel and Distributed Adaptive Applications, ed. by M. Parashar, X. Li. John Wiley & Sons, Inc., Hoboken, New Jersey, chap. 3, pp. 29-43. Wiley Series of Parallel and Distributed Computing, 2010.

M. T. Sletholt, J. E. Hannay, H. P. Langtangen, and D. Pfahl. Making Modern Scientific Software Development Explicitly Agile, In: The Changing Dynamics of Scientific Collaborations, 2010.

Karen-H. Støverud, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. CSF Flow in Chiari I and Syringomyelia - From the Perspective of Fluid dynamics, In: Proceedings of the XIX Symposium Neuroradiologicum, Bologna, Italy, ed. by , vol. ( ), , 2010.

H. P. Langtangen. Computational Modeling of Huge Tsunamis From Asteroid Impacts, Computational Geoscience seminar, 2010.

Kent-A. Mardal, H. P. Langtangen, and P. Røtnes. Is zombies a threat to mankind?, Talk presented at FEniCS 2010 , 2010.

Karen-H. Støverud, Kent-A. Mardal, and H. P. Langtangen. From a Physical Problem to Computer Simulations, CBC Workshop on Cerebrospinal Fluid Flow in the Brain and Spinal Canal - Clinical, Experimental and Mathematical Models and Problems, Simula, May 28, 2010.

Karen-H. Støverud, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. Cerebrospinal Fluid (CSF) - Oscillating Flow and Pressure, CBC Workshop on Aerosols: Dispersion, Transport and Effects, Simula, November 10, 2010.

Karen-H. Støverud, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. Cerebrospinal Fluid (CSF) - Oscillating Flow and Pressure, Selected Topics Seminar IWS Stuttgart, 2010.

Karen-H. Støverud, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. CSF Hydrodynamic in Patients With Syringomyelia and Chiari I Malformations, Annual NUPUS meeting in Freudenstadt, 2010.

H. P. Langtangen. A Primer on Scientific Programming with Python, Springer, 2009.

M. S. Alnæs, A. Logg, Kent-A. Mardal, O. Skavhaug, and H. P. Langtangen. Unified Framework for Finite Element Assembly, International Journal of Computational Science and Engineering 4(4):231-244, 2009.

S. Linge, V. Haughton, A. E. Løvgren, Kent-A. Mardal, and H. P. Langtangen. CSF flow dynamics at the cranio-vertebral junction studied with an idealized model of the subarachnoid space and computational flow analysis, American Journal of Neuroradiology 31(1):185-192, 2009.

J. B. Haga, H. P. Langtangen, B. F. Nielsen, and H. Osnes. On the performance of an algebraic multigrid preconditioner for the pressure equation with highly discontinuous media, In: Proceedings of MekIT'09, ed. by B. Skallerud and H. I. Andersson, pp. 191-204, NTNU, Tapir, 2009.

J. E. Hannay, H. P. Langtangen, C. MacLeod, D. Pfahl, J. Singer, and G. Wilson. How Do Scientists Develop and Use Scientific Software?, In: Software Engineering for Computational Science and Engineering , ed. by Jeff Carver, pp. 1-8, IEEE Computer Society (ISBN: 978-1-4244-3737-5), 2009.

S. Linge, A. E. Løvgren, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. Effect of Tonsilar Position on Cerebrospinal Fluid Flow in the Spinal Subarachnoid Space Studied with Computational Fluid Dynamics, In: Proceedings of the ASNR 47th annual meeting, May 16-21, Vancouver, BC, Canada, ed. by , , 2009.

K. Valen-Sendstad, M. Mortensen, H. P. Langtangen, B. A. Pettersson Reif, and Kent-A. Mardal. Implementing a k-e Turbulence Model in the FEniCS Finite Element Programming Environment, In: MekIT'09, ed. by Bjørn Skallerud and Helge Andersson, Tapir, 2009.

I. Wilbers, H. P. Langtangen, and Å. Ødegård. Using Cython to Speed up Numerical Python Programs, In: Proceedings of MekIT'09, ed. by B. Skallerud and H. I. Andersson, pp. 495-512, NTNU, Tapir, 2009.

H. P. Langtangen and O. Lysne. The Hamming Experience, In: Simula Research Laboratory — by thinking constantly about it, ed. by Aslak Tveito and Are Magnus Bruaset and Olav Lysne. Springer, chap. 5, pp. 33-36, 2009.

H. P. Langtangen and J. Sundnes. Scientific Computing: Why - How - What - What's Next, In: Simula Research Laboratory - by thinking constantly about it, ed. by Aslak Tveito and Are Magnus Bruaset and Olav Lysne. Springer, chap. 18, pp. 237-248, 2009.

A. Logg, H. P. Langtangen, and X. Cai. Past and Future Perspectives on Scientific Software, In: Simula Research Laboratory - by thinking constantly about it, ed. by Tveito, Aslak and Bruaset, Are Magnus and Lysne, Olav . Springer, Heidelberg, chap. 23, pp. 321--362, 2009.

J. B. Haga, H. P. Langtangen, B. F. Nielsen, and H. Osnes. On the Perfermance of an Algebraic Multigrid Preconditioner for the Pressure Equationwith Highly Discontinuous Media, Talk at MekIT'09: Fifth National Conference on Computational Mechanics, Trondheim, May 26-27, 2009.

H. P. Langtangen. Experience with Merging Mathematics, Numerical Methods, Physics and Programming From Day 1, Invited talk at Telemark College, Engineering Faculty, Porsgrunn, Norway, 2009.

H. P. Langtangen. Techniques for Achieving High Performance in Numerical Python Codes, Invited talk at Telemark College, Engineering Faculty, Porsgrunn, Norway, 2009.

H. P. Langtangen. Experience with Python in a Major Educational Reform, Minisymposium talk at the SIAM Conference on Computational Science and Engineering, Miami, USA, 2009.

H. P. Langtangen. Modeling and Simulation, Invited talk at a Tekna Labor Union seminar, 2009.

H. P. Langtangen. Python as an Important Tool in a Major Science Education Reform, Invited talk at Telemark College, Engineering Faculty, Porsgrunn, Norway, 2009.

S. Linge, A. E. Løvgren, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. Cerebrospinal fluid flow investigations with modelling and simulation, invited talk at The Chiari Institute, 14th of January, New York, U.S.A, 2009.

S. Linge, A. E. Løvgren, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. Simulating normal and abnormal CSF flow with idealized geometries, talk, seminar on cerebrospinal fluid flow, 16th of January, University of Wisconsin, U.S.A, 2009.

S. Linge, A. E. Løvgren, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. Tonsilar herniation - How is the CSF flow influenced?, Invited talk at Rikshospitalet University Hospital, Oslo, Norway, 5th of June , 2009.

Kent-A. Mardal, V. Haughton, S. Hentschel, H. P. Langtangen, S. Linge, A. E. Løvgren, and K. Valen-Sendstad. CSF Flow Modelling, Invited talk at CSR Flow Research Conference at University of Wisconsin, Nov 9, 2009.

Kent-A. Mardal, A. Helgeland, S. Hentschel, H. P. Langtangen, A. Logg, S. Linge, A. E. Løvgren, and K. Valen-Sendstad. Some Biomedical Applications at Simula, Talk at the CBC Workshop on Computational Biology with UMB, 2009.

Kent-A. Mardal, S. Hentschel, A. Helgeland, H. P. Langtangen, S. Linge, A. E. Løvgren, A. Logg, and K. Valen-Sendstad. Patient-specific simulations of stroke and syringomyelia, Talk : Advisory commitee meeting FFI project P1112 Aerosols: Dispersion, Transport and Consequences, Nov 03, 2009.

F. Perez, H. P. Langtangen, and R. LeVeque. Python for Scientific Computing at SIAM CSE 2009, Article in the SIAM News magazine, 2009.

K. Valen-Sendstad, M. Mortensen, H. P. Langtangen, B. A. Pettersson Reif, and Kent-A. Mardal. Implementing a k-e Turbulence Model in the FEniCS Finite Element Programming Environment, Talk at MekIT'09: Fifth National Conference on Computational Mechanics, Trondheim, May 26-27, 2009.

I. Wilbers, H. P. Langtangen, and Å. Ødegård. Using Cython to speed up numerical python programs, Talk at MekIT'09: Fifth National Conference on Computational Mechanics, Trondheim, May 26-27, 2009.

H. P. Langtangen. Python Scripting for Computational Science, Springer, Heidelberg (third edition), 2008.

H. Holmås, D. Clamond, and H. P. Langtangen. A Pseudospectral Fourier Method for a 1D Incompressible Two-Fluid Model, International Journal for Numerical Methods in Fluids(58):639-658, 2008.

H. Sira, T. Nordsveen, H. P. Langtangen, and R. Shulkes. Analysis of a 1D Incompressible Two-Fluid Model Including Artificial Diffusion, IMA Journal of Applied Mathematics(73):651-667, 2008.

H. P. Langtangen and X. Cai. On the efficiency of Python for high-performance computing: a case study involving stencil updates for partial differential equations, In: Modeling, Simulation and Optimization of Complex Processes, ed. by Bock, H. G. and Kostina, E. and Phu, H. X. and Rannacher, R. , pp. 337--358, Springer. LNCSE, 2008.

H. P. Langtangen and A. Logg. Trends in Computational Mechanics Software, In: 21st Nordic Seminar on Computational Mechanics, 21st Nordic Seminar on Computational Mechanics, ed. by Pettersen, B. and Mathisen, K.M. and Kvamsdal, T., CIMNE, 2008.

A. E. Løvgren, S. Linge, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. CFD analysis of cerebrospinal fluid flow in the cranio-cervical region, In: 21st Nordic Seminar on Computational Mechanics, ed. by Kvamsdal, T. and Mathisen, K.M. and Pettersen, B., pp. 94-97, CIMNE, 2008.

O. Al-Khayat, A. M. Bruaset, and H. P. Langtangen. Numerical Modeling of Turbidity Flow with the Lattice Boltzmann Method , Talk at the Computational Geoscience workshop , 2008.

O. Al-Khayat, H. P. Langtangen, and A. M. Bruaset. A Coupled Lattice Boltzmann Model for a Turbulent Sand-Laden Fluid Flow, Talk at the DSFD conference in Brazil, 2008.

O. Al-Khayat, T. Løseth, A. M. Bruaset, and H. P. Langtangen. Particle-based methods in the modelling of turbidity currents and turbidites, Talk at the 33rd IGC Congress in Oslo , 2008.

H. P. Langtangen, O. Al-Khayat, and A. M. Bruaset. Numerical Python, Four day course at the University of Erlangen, 2008.

S. Linge, A. E. Løvgren, Kent-A. Mardal, and H. P. Langtangen. Simulating the cerebral fluid flow associated with Chiari I malformation in idealized geometries, talk, Seminar at CBC (Simula Research Laboratory), 25th of June, Oslo, Norway, 2008.

S. Linge, A. E. Løvgren, Kent-A. Mardal, and H. P. Langtangen. Simulating the cerebral fluid flow associated with Chiari I malformation in idealized geometries, talk, Seminar at CBC (Simula Research Laboratory), 20th of May, Oslo, Norway, 2008.

S. Linge, A. E. Løvgren, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. Chiari Malformation - the problem and a mathematical approach, Invited talk, Vindern Medical Center, 8th of December, Oslo, Norway, 2008.

S. Linge, A. E. Løvgren, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. Cerebrospinal Fluid Flow in Normal and Chiari Subjects, talk, Seminar at CBC (Simula Research Laboratory), 16th of December, Oslo, Norway, 2008.

S. Linge, A. E. Løvgren, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. Cerebrospinal fluid flow simulations - normal subjects and patients with Chiari I malformation, talk, Seminar at CBC (Simula Research Laboratory), 31st of October, Oslo, Norway), 2008.

A. E. Løvgren, S. Linge, Kent-A. Mardal, V. Haughton, and H. P. Langtangen. CFD analysis of cerebrospinal fluid flow in the cranio-cervical region, Invited talk at the 21st Nordic Seminar on Computational Mechanics, Trondheim, October 16-17, 2008.

S. Glimsdal, G. K. Pedersen, H. P. Langtangen, V. Shuvalov, and H. Dypvik. Tsunami Generation and Propagation from the Mjølnir Asteroid Impact, Metheoritics & Planetary Science 42(9):1473-1493, 2007.

H. Holmås, T. Sira, M. Nordsveen, and H. P. Langtangen. Analysis of a 1D Incompressible Two-Fluid Model Including ArtificialDiffusion, IMA Journal of Applied Mathematics 73(4):651-667, 2007.

K. Holmås and H. P. Langtangen. A sharp interface finite element method for elliptic interface problems; formulation and investigation in one space dimension, International Journal of Pure and Applied Mathematics 34(3):287-312, 2007.

S. Rahman, H. P. Langtangen, and C. H. W. Barnes. A finite element method for modelling electromechanical wave propagation in anisotropic piezoelectric media, Communications in Computational Physics 2(2):271-292, 2007.

S. Rahman, T. M. Stace, H. P. Langtangen, M. Kataoka, and C. H. W. Barnes. Pulse-Induced Acoustoelectric Vibrations in Surface-Gated GaAs-based Quantum Devices, Physical Review B: Condensed Matter and Materials Physics 75(205303), 2007.

O. Al-Khayat, A. M. Bruaset, and H. P. Langtangen. Lattice Boltzmann method and Turbidity Flow Modeling, In: MekIT'07 : Fourth National Conference in Computational Mechanics, ed. by B. Skallerud and H. I. Andersson, pp. 213--228, Tapir Academic Press, 2007.

R. E. Bredesen, H. P. Langtangen, and G. Pedersen. Benchmark of a Tsunami Run-Up Code, In: MekIT'07, ed. by B. Skallerud and H. I. Anderson , pp. 127--134, Tapir Academic Press 2007, 2007.

X. Cai and H. P. Langtangen. Making hybrid tsunami simulators in a parallel software framework, In: Proceedings of the PARA'06 Workshop, ed. by Kågström, B. and Elmroth, E. and Dongarra, J. and Wasniewski, J., pp. 686-693, Berlin Heidelberg, Springer Verlag. Lecture Notes in Computer Science, volume 4699, 2007.

J. B. Haga, A. M. Bruaset, X. Cai, H. P. Langtangen, H. Osnes, and J. Skogseid. Parallelisation and numerical performance of a 3D model for coupled deformation, fluid flow and heat transfer in sedimentary basins, In: MekIT'07, ed. by B. Skallerud and H. I. Andersson, pp. 151--162, Trondheim, Tapir Academic Press, 2007.

H. P. Langtangen. A Case Study in High-Performance Mixed-Language Programming, In: Applied Parallel Computing - State of the Art in Scientific Computing (PARA'06), ed. by Kågstrøm, B. and Elmroth, E. and Dongarra, J. and Wasniewski, J., pp. 36-49, Springer, 2007.

A. Logg, Kent-A. Mardal, M. S. Alnæs, H. P. Langtangen, and O. Skavhaug. A Hybrid Approach to Efficient Finite Element Code Development, In: Petascale Computing -- Algorithms and Applications, ed. by D. A. Bader. Chapman and Hall, chap. 19. Computational Science, 2007.

J. B. Haga, H. Osnes, H. P. Langtangen, and A. M. Bruaset. PhD: Simulation of deformation and heat flow in sedimentary basins, Simula, Project report, 2007.

M. S. Alnæs, A. Logg, Kent-A. Mardal, O. Skavhaug, and H. P. Langtangen. UFC Specification and User Manual 1.0, Manual, 2007.

O. Al-Khayat, A. M. Bruaset, and H. P. Langtangen. Lattice Boltzmann method and Turbidity Flow Modeling, Talk at MekIT'07: Fourth National Conference on Computational Mechanics, 2007.

R. E. Bredesen, G. Pedersen, and H. P. Langtangen. Benchmark of a Tsunami Run-Up Code, Talk at the MekIT'07: Fourth National Conference on Computational Mechanics, Trondheim, Norway, 2007.

X. Cai and H. P. Langtangen. On a future software platform for demanding multi-scale and multi-physics problems, Talk at SIAM CSE07 Conference, Costa Mesa, CA, Feb. 19-23, 2007.

H. Enger, J. Feder, A. Malthe-Sørenssen, and H. P. Langtangen. Optimal Coupling in a Multiscale Model, Poster at the Kongsberg Seminar on geology, Kongsberg, Norway, 2007.

J. B. Haga, A. M. Bruaset, X. Cai, H. P. Langtangen, H. Osnes, and J. Skogseid. Parallelisation and Numerical Performance of a 3D Model for Coupled Deformation, Fluid Flow, and Heat Transport in Porous Geological Formations, Talk at the Fourth National Conference on Computational Mechanics (MekIT'07), Trondheim, Norway, 2007.

H. Holmås, D. Clamond, and H. P. Langtangen. A Pseudospectral Fourier Method Applied to an Incompressible Two-Fluid Model, Talk at the International Conference on Multiphase Flow, ICMF 2007, Leipzig, Germany, 2007.

H. P. Langtangen. Computational Modeling of Huge Tsunamis from Asteroid Impacts, Invited keynote lecture at the International conference on Computational Science 2007 (ICCS'07), Beijing, China, 2007.

S. Glimsdal, G. K. Pedersen, K. Atakan, C. B. Harbitz, H. P. Langtangen, and F. Løvholt. Propagation of the Dec. 26, 2004 Indian Ocean Tsunami: effects of dispersion and source characteristics, The Int. J. of Fluid Mech. Res. 33(1):15--43, 2006.

K. Hinsen, H. P. Langtangen, O. Skavhaug, and Å. Ødegård. Using BSP and Python to Simplify Parallel Programming, Future Generation Computer Systems 22(1-2):123--157, 2006.

S. Rahman, J. Goreman, C. H. W. Barnes, D. Williams, and H. P. Langtangen. Finite element analysis of a silicon-based double quantum dot structure., Physical Review B 75(233307), 2006.

S. Rahman, J. Goreman, C. H. W. Barnes, D. Williams, and H. P. Langtangen. Numerical investigation of a piezoelectric surface acoustic wave interaction with a one-dimensional channel, Physical Review B 75(233307), 2006.

S. Rahman, H. P. Langtangen, and C. H. W. Barnes. A finite element method for modelling electromechanical wave propagation in anisotropic piezoelectric media, Communications in Computational Physics 2(2):271-292, 2006.

X. Cai, G. K. Pedersen, H. P. Langtangen, and S. Glimsdal. Parallel Simulation of Tsunamis Using a Hybrid Software Approach, In: Proceedings of the International Conference ParCo 2005, September 13-16, Malaga, Spain, ed. by G. R. Joubert et al, pp. 383--390, John von Neumann Institute for Computing. Volume 33 in NIC series, 2006.

X. Cai and H. P. Langtangen. Parallelizing PDE solvers using the Python programming language, In: Numerical Solution of Partial Differential Equations on Parallel Computers, ed. by A. M. Bruaset and A. Tveito. Springer, pp. 295-325. Lecture Notes in Computational Science and Engineering, 2006.

M. S. Alnæs, A. M. Bruaset, X. Cai, H. P. Langtangen, Kent-A. Mardal, H. Moe, O. Skavhaug, and Å. Ødegård. Python in High Performance Computing, Tutorial presented at the Para06 Workshop, 2006.

S. Glimsdal, G. K. Pedersen, H. P. Langtangen, V. Shuvalov, and H. Dypvik. Tsunami generation and propagation from the Mjølnir asteroid impact, Poster at Impact craters as indicators for planetary environmental evolution and astrobiology, 2006.

H. P. Langtangen. Tsunami simulations and their need for computational power, Invited lecture at Dagstuhl conference Architectures and Algorithms for Petascale Computing, 2006.

H. P. Langtangen. Simulation of tsunamis generated by earth-asteroid collisions, Invited keynote lecture, 2006.

H. P. Langtangen. Mixed-language programming for HPC applications, Invited keynote lecture at PARA’06, 2006.

H. P. Langtangen. Building programmable problem solving environments for porous media flow, Invited keynote lecture, 2006.

H. P. Langtangen. An overview of mathematical modeling and numerical simulation, Invited talk at the Oslo School of Architecture and Design, 2006.

H. P. Langtangen. Why simulate?, Invited plenary talk at the Norwegian Defence Research Establishment (FFI), 2006.

H. P. Langtangen. Using Python to build programmable problem solving environments, Invited talk at the Norwegian Defence Research Establishment (FFI), 2006.

H. P. Langtangen. Modeling tsunamis originating from earth-asteroid collisions, Invited talk at the Center of Excellence for Nonlinear Science, 2006.

H. P. Langtangen and Kent-A. Mardal. Mathematical modeling of blood flow, Lecture at Svalbard summer school, 2006.

H. P. Langtangen and J. Sundnes. Introduction to heart muscle mechanics-basic concepts of muscle contraction and soft tissue mechanics., Lecture at Svalbard summer school, 2006.

H. P. Langtangen. Python Scripting for Computational Science, Springer (second edition), 2005.

X. Cai, P. Jeberg, and H. P. Langtangen. A numerical method for computing the profile of weld pool surfaces, International Journal for Computational Methods in Engineering Science and Mechanics 6(2):115-125, 2005.

X. Cai, H. P. Langtangen, and H. Moe. On the performance of the Python programming language for serial and parallel scientific computations, Scientific Programming 13(1):31-56, 2005.

X. Cai, G. K. Pedersen, and H. P. Langtangen. A parallel multi-subdomain strategy for solving Boussinesq water wave equations, Advances in Water Resources 28(3):215-233, 2005.

K. Holmås, J. Nossen, D. Mortensen, R. Schulkes, and H. P. Langtangen. Simulation of wavy stratified two-phase flow using computational fluid dynamics (CFD), In: 12th International Conference on Multiphase Production Technology '05, ed. by A. Hunt, BHR Group Ltd., Barcelona, Spain, May 25-27 , 2005.

C. C. Douglas and H. P. Langtangen. Hardware-assisted algorithms, In: Accuracy and Reliability in Scientific Computing, ed. by B. Einarsson. SIAM, chap. 11, pp. 241-250, 2005.

C. C. Douglas and H. P. Langtangen. General methods for implementing reliable and correct software: C, C++, and Python, In: Accuracy and Reliability in Scientific Computing, ed. by B. Einarsson. SIAM, chap. 8.2, 8.3 and 8.6, pp. 136-142, 142-149 and 162-170 , 2005.

O. Skavhaug, Kent-A. Mardal, and H. P. Langtangen. A Python Framework for Verifying Codes for Numerical Solutions of Partial Differential Equations, Simula Research Laboratory, Simula Preprint(2005-18), 2005.

A. M. Bruaset, M. S. Alnæs, H. P. Langtangen, Kent-A. Mardal, H. Moe, O. Skavhaug, and Å. Ødegård. Scientific Computing in Python, Tutorial ASIM 2005, 2005.

X. Cai and H. P. Langtangen. Parallelization of PDE codes, Talk at the CMA Workshop on High-Performance Computing in Physics, November 4, Oslo, Norway, 2005.

X. Cai, G. K. Pedersen, and H. P. Langtangen. Solving Boussinesq water wave equations on parallel computers, Talk at the International Workshop on Numerical Ocean Modeling, Oslo, Norway, 2005.

X. Cai, G. K. Pedersen, H. P. Langtangen, and S. Glimsdal. Parallel simulation of tsunamis using a hybrid software approach, Talk at ParCo 2005 Conference, 13 - 16 September, Malaga, Spain, 2005.

S. Glimsdal, G. K. Pedersen, V. Shuvalov, H. Dypvik, H. P. Langtangen, and Ø. Kristiansen. Tsunami generated by the Mjølnir impact, Poster on Lunar and Planetary Science Conference XXXVI, 2005.

H. P. Langtangen. Tools for multi-physics simulation, Invited talk at the FEniCS’05 workshop, 2005.

H. P. Langtangen. Tsunamis generated by earth-asteroid impacts, Invited talk at the BeMatA (Computational Mathematics for Applications) meeting, 2005.

H. P. Langtangen. Solution of partial differential equations on parallel computers, Lecture at the workshop High-Performance Computing in Physics, 2005.

O. Skavhaug and H. P. Langtangen. A basic introduction to Python, Invited talk at Uppsala University, 2005.

H. P. Langtangen. Python Scripting for Computational Science, Springer-Verlag, 2004.

S. Glimsdal, G. Pedersen, and H. P. Langtangen. An Investigation of Domain Decomposition Methods for One-Dimensional Dispersive Long Wave Equations, Advances in Water Resources 27(11):1111--1133, 2004.

M. Huseby, H. P. Langtangen, and D. E. Reksten. A Three-Dimensional Model for Noise Propagation over Realistic Terrain, In: Proceedings of the 27th Scandinavian Symposium on Physical Acoustics, Ustaoset, Norway, 2004.

P. Böhm, A. M. Bruaset, H. P. P. Langtangen, Kent-A. Mardal, and G. Wachutka. Diffpack Implementation of Edge-Based Non-Standard Finite Element Methods, Simula Research Laboratory, Research Report(2004-11), 2004.

R. Geus, O. Skavhaug, and H. P. Langtangen. Python Wrapper Tools; a Performance Study, Talk at the EuroPython 2004 Conference, Gothenburg, Sweden, 2004.

M. Huseby, H. P. Langtangen, and D. E. Reksten. A Three-Dimensional Model for Noise Propagation over Realistic Terrain, Talk at the 27th Scandinavian Symposium on Physical Acoustics, Ustaoset, Norway, 2004.

M. Westlie, K.-A. Mardal, and H. P. Langtangen. Making a Python Interface to the C++ Library Diffpack, Talk at the EuroPython 2004 Conference, Gothenburg, Sweden, 2004.

Å. Ødegård, K.-A. Mardal, P. Miller, H. Moe, O. Skavhaug, A.-M. Bruaset, and H. P. Langtangen. High Performance Computing in Python, Tutorial, SC2004, 2004.

H. P. Langtangen. Computational Partial Differential Equations - Numerical Methods and Diffpack Programming, Springer-Verlag, 2003.

H. P. Langtangen and A. Tveito. Advanced Topics in Computational Partial Differential Equations · Numerical Methods and Diffpack Programming, Springer-Verlag, 2003.

L. Ingebrigtsen, T. K. Nilssen, H. P. Langtangen, and A. Tveito. On the accuracy of operator splitting for a fluid-structure interaction problem, International Journal of Nonlinear Sciences and Numerical Simulation 4:209-218, 2003.

A. Kjeldstad, J. Skogseid, H. P. Langtangen, and K. Bjørlykke. Differential loading by prograding sedimentary wedges on continental margin: an arch forming mechanism, Journal of Geophysical Research 108(B1):2036, 2003.

M. Huseby and H. P. Langtangen. Modeling Propagation of Noise over Three-Dimensional Terrains, In: Proceedings of the Second National Conference on Computational Mechanics MekIT'03, 2003.

P. Jeberg, X. Cai, H. P. Langtangen, and H. Holm. A flexible architecture for welding simulators used in weld planning, In: Proceedings of International Conference on Productive Welding in Industrial Applications, Lappenranta, Finland, 2003.

H. P. Langtangen and H. Osnes. Stochastic Partial Differential Equations, In: Advanced Topics in Computational Partial Differential Equations -- Numerical Methods and Diffpack Programming, ed. by H. P. Langtangen and A. Tveito, pp. 257-320, Springer-Verlag. Lecture Notes in Computational Science and Engineering, 2003.

K.-A. Mardal, H. P. Langtangen, and R. Winter. Error Estimates for the Linear Navier-Stokes Equations, In: Proceedings of the Second National Conference on Computational Mechanics (MekIT'03), ed. by B. Skallerud and H.I. Andersson, pp. 225-237, Tapir Academic Press, 2003.

Å. Ødegård, H. P. Langtangen, and A. Tveito. Fully Implicit Methods for Systems of PDEs, In: Advanced Topics in Computational Partial Differential Equations - Numerical Methods and Diffpack Programming, ed. by H. P. Langtangen and A. Tveito, pp. 237-256, Springer-Verlag. Lecture Notes in Computational Science and Engineering, 2003.

X. Cai, E. Acklam, H. P. Langtangen, and A. Tveito. Parallel Computing, In: Advanced Topics in Computational Partial Differential Equations -- Numerical Methods and Diffpack Programming, ed. by H. P. Langtangen and A. Tveito. Springer-Verlag, pp. 1-55. Lecture Notes in Computational Science and Engineering, 2003.

X. Cai, A. M. Bruaset, H. P. Langtangen, G. T. Lines, K. Samuelsson, W. Shen, A. Tveito, and G. Zumbusch. Performance Modeling of PDE Solvers, In: Advanced Topics in Computational Partial Differential Equations -- Numerical Methods and Diffpack Programming, ed. by H. P. Langtangen and A. Tveito. Springer-Verlag, pp. 361-399. Lecture Notes in Computational Science and Engineering, 2003.

A. Kjeldstad, H. P. Langtangen, J. Skogseid, and K. Bjørlykke. Simulation of Sedimentary Basins, In: Advanced Topics in Computational Partial Differential Equations - Numerical Methods and Diffpack Programming, ed. by H. P. Langtangen and A. Tveito. Springer-Verlag. Lecture Notes in Computational Science and Engineering, 2003.

H. P. Langtangen and K.-A. Mardal. Using Diffpack from Python Scripts, In: Advanced Topics in Computational Partial Differential Equations - Numerical Methods and Diffpack Programming, ed. by Langtangen, H.P. and Tveito, A.. Springer-Verlag, pp. 321-360. Lecture Notes in Computational Science and Engineering, 2003.

K.-A. Mardal and H. P. Langtangen. Mixed elements in Diffpack, In: Advanced Topics in Computational Partial Differential Equations - Numerical Methods and Diffpack Programming, ed. by Langtangen, H.P. and Tveito, A.. Springer-Verlag, pp. 153-198. Lecture Notes in Computational Science and Engineering, 2003.

K.-A. Mardal, J. Sundnes, H. P. Langtangen, and A. Tveito. Block preconditioning and Systems of PDEs, In: Advanced Topics in Computational Partial Differential Equations - Numerical Methods and Diffpack Programming, ed. by Langtangen, H.P. and Tveito, A.. Springer-Verlag, pp. 199-236. Lecture Notes in Computational Science and Engineering, 2003.

K.-A. Mardal, G. Zumbusch, and H. P. Langtangen. Multigrid Methods in Diffpack, In: Advanced Topics in Computational Partial Differential Equations - Numerical Methods and Diffpack Programming, ed. by Langtangen, H.P. and Tveito, A.. Springer-Verlag, pp. 97-152. Lecture Notes in Computational Science and Engineering, 2003.

T. Thorvaldsen, H. P. Langtangen, and H. Osnes. Finite Element Modeling of Elastic Structures, In: Advanced Topics in Computational Partial Differential Equations -- Numerical Methods and Diffpack Programming, ed. by H. P. Langtangen and A. Tveito. Springer-Verlag, pp. 507-576. Lecture Notes in Computational Science and Engineering, 2003.

T. Akbay, A. M. Bruaset, and H. P. Langtangen. A Multi-Physics Solid Oxide Fuel Cell Simulator as a Diffpack Application, Invited minisymposium talk at the 21st CAD-FEM User's Meeting, Potsdam, Germany, 2003.

A. M. Bruaset and H. P. Langtangen. Future Development of Diffpack at Simula, Invited minisymposium talk at the 21st CAD-FEM User's Meeting, Potsdam, Germany, 2003.

H. P. Langtangen. Stochastic Ordinary Differential Equations and Deterministic Partial Differential Equations -- On the Relation Between Quantum Mechanics and Other Fields of Science, Lecture at the workshop Numerical Methods for Quantum Mechanics at the Center of Mathematics for Applications (CMA), Oslo, Norway, 2003.

H. P. Langtangen and A. M. Bruaset. The History and Philosophy of Diffpack, Invited minisymposium talk at the 21st CAD-FEM User's Meeting, Potsdam, Germany, 2003.

Kent-A. Mardal, A. Huerta, H. P. Langtangen, and D. Harry. Numerical Modeling of Crust and Mantle Movement, Talk presented at SIAM Conference on Mathematical and Computational Issues in the Geosciences (GS0 3), March 17-20, 2003, Austin, Texas, 2003.

H. P. Langtangen and G. Pedersen. Propagation of Large Destructive Waves, International Journal of Applied Mechanics and Engineering 7(1):187-204, 2002.

H. P. Langtangen, K.-A. Mardal, and R. Winther. Numerical Methods for Incompressible Viscous Flow, Advances in Water Resources 25(8):1125-1146, 2002.

X. Cai and H. P. Langtangen. Developing Parallel Object-Oriented Simulation Codes in Diffpack, In: Proceedings of the Fifth World Congress on Computational Mechanics, Vienna University of Technology, 2002.

H. P. Langtangen and K.-A. Mardal. A Software Framework for Mixed Finite Element Programming, In: Proceedings of the 2nd International Conference on Computational Science, Springer-Verlag. Lecture Notes in Computer Science, 2002.

E. Acklam and H. P. Langtangen. Tools for Simplified Programming with Staggered Grids, Simula Research Laboratory, Research report(2002-06), 2002.

D. Calhoun and H. P. Langtangen. Writing C++ Interfaces to FORTRAN Packages, Simula Research Laboratory, Research report(2002-07), 2002.

H. P. Langtangen. Tips and frequently asked questions about Diffpack, Numerical Objects A.S., Numerical Objects Report Series, 2002.

X. Cai and H. P. Langtangen. Developing Parallel Object-Oriented Simulation Codes in Diffpack, Invited talk at the Fifth World Congress on Computational Mechanics, Vienna, Austria, 2002.

H. P. Langtangen and A. Tveito. How Should We Prepare the Students of Science and Technology for a Life in the Computer Age?, Invited talk at the Department of Mathematics, University of Coimbra, Portugal, 2002.

H. P. Langtangen and O. Munthe. Solving Systems of Partial Differential Equations Using Object-Oriented Programming Techiques with Coupled Heat and Fluid Flow as Example, Transactions on Mathematical Software 27(1):1-26, 2001.

X. Cai and H. P. Langtangen. How modern programming techniques can greatly simplify the development of parallel simulation codes in computational mechanics, In: Proceedings of the MekIT'01 Conference, Tapir, 2001.

L. Ingebrigtsen, A. Bounaim, H. P. Langtangen, and A. Tveito. Moving Mesh Techniques for Fluid Flow Simulations, In: Proceedings from the First SIAM-EMS Conference on Applied Mathematics in our Changing World, Berlin, 2001.

H. P. Langtangen and X. Cai. A Software Framework for Easy Parallelization of PDE Solvers, In: Proceedings of Parallel Computational Fluid Dynamics 2000, ed. by C. B. Jensen and T. Kvamsdal and H. I. Andersson and B. Pettersen and A. Ecer and J. Periaux and N. Satofuka and P. Fox, North Holland, 2001.

H. P. Langtangen and G. Pedersen. Propagation of Large Destructive Waves, In: Computational Mechanics (MekIT'01), ed. by H. I. Andersson and B. Skallerud, Tapir, 2001.

K.-A. Mardal and H. P. Langtangen. An efficient parallel iterative approach to a fully implicit mixed finite element formulation for the Navier-Stokes equations, In: ECCOMAS CFD 2001, Computational Fluid Dynamics Conference Proceedings, Swansea, 2001, CD-ROM, European Community on Computational Methods in Applied Sciences, ISBN 0 905 091 12 4, 2001.

K.-A. Mardal, H. P. Langtangen, and R. Winter. An Optimal Iterative Method for the Time-Dependent Stokes Problem, In: Tenth Conference Virtual Proceedings, Copper Mountain Conference on Multigrid Methods, Copper Mountain, CO, USA, MGNet, 2001.

X. Cai and H. P. Langtangen. How Modern Programming Techniques Can Greatly Simplify the Development of Parallel Simulation Codes in Computational Mechanics, Talk at the National Conference on Computational Mechanics (MekIT'01), Trondheim, Norway, 2001.

H. P. Langtangen. Some Efficiency Considerations when Using C++ and Object-Oriented Programming in Numerical Codes, Invited minisymposium talk at the GAMM 2001 Conference in Zurich, Switzerland, 2001.

H. P. Langtangen. Rapid Prototyping in Multi-Physics Simulation, Keynote lecture at Advanced Environments and Tools for High Performance Computing; EuroConference on Problem-Solving Environments for Numerical Mathematics, Science and Engineering Applications, Castelvecchio Pascoli, Italy, 2001.

G. Pedersen and H. P. Langtangen. Propagation of Large Destructive Waves (Tsunamis), Talk at the National Conference on Computational Mechanics (MekIT'01), Trondheim, Norway, 2001.

H. P. Langtangen and O. Munthe. Finite Elements and Object-Oriented Implementation Techniques in Computational Fluid Dynamics, Computer Methods in Applied Mechanics and Engineering 190:865-888,, 2000.

X. Cai, H. P. Langtangen, and O. Munthe. An object-oriented software framework for building parallel Navier-Stokes solvers, In: Parallel Computational Fluid Dynamics, ed. by D. Keyes et al, pp. 147-154, Elsevier, 2000.

Kent-A. Mardal and H. P. Langtangen. An effective iterative approach to a fully implicit mixed finite element formulation for the Navier-Stokes equations, In: 13th Nordic Seminar on Computational Mechanics (NSCM-13) , ed. by J. Hellesland, H. Osnes and G. Skeie , pp. 86-89, Mechanics and Applied Mathematics Series, No. 7, October 2000, 2000.

H. P. Langtangen and A. Tveito. How Should We Prepare the Students of Science and Technology for a Life in the Computer Age?, In: Mathematics Unlimited - 2001 and Beyond, ed. by B. Engquist and W. Schmid. Springer-Verlag, chap. -, pp. 59-64, 2000.

H. P. Langtangen and X. Cai. A Software Framework for Easy Parallelization of PDE Solvers, Keynote lecture at the Parallel CFD 2000 Conference, Trondheim, Norway, 2000.

H. P. Langtangen and X. Cai. A Software Strategy for Easy Parallelization of Sequential PDE Solvers, Talk at the minisymposium on Modern Software Aspects for PDE Solvers (organized by H. P. Langtangen and Stefan Turek (University of Dortmund)) at the IMACS 2000 Conference, Lausanne, Switzerland, 2000.

H. P. Langtangen. Computational Partial Differential Equations - Numerical Methods for Scientific Programming, Springer-Verlag, 1999.

H. P. Langtangen, A. M. Bruaset, and E. Quak. Advances in Software Tools for Scientific Computing, Springer-Verlag, 1999.

E. Holm and H. P. Langtangen. A unified finite element model for the injection molding process, Computer Methods in Applied Mechanics and Engineering 178:413-429,, 1999.

E. Holm and H. P. Langtangen. A method for simulating sharp fluid interfaces in groundwater flow, Advances in Water Resources 23:83-95,, 1999.

H. P. Langtangen and G. Pedersen. Finite Element Models for Tsunami Simulation, In: Proceedings of the International Conferance on Tsumanis, Paris , France, 1999.

G. Pedersen and H. P. Langtangen. Effects of Dispersion on Generation and Propagation of Tsunamis, In: Proceedings of the International Conferance on Tsunamis, Paris, France,, 1999.

G. Pedersen and H. P. Langtangen. An Analytic Approach to Tsunami Modeling, In: Proceedings of the International Conferance on Tsunamis, Paris, France,, 1999.

J. Berge, A. M. Bruaset, H. Erlandsen, E. Holm, L. Ingebrigtsen, H. P. Langtangen, H. Osnes, and T. Rusten. Coupling of PDEs in Diffpack Environments, SINTEF, 1999.

E. Acklam and H. P. Langtangen. Parallelization of explicit finite difference schemes via domain decomposition, Oslo Scientific Computing Archive, 1999.

E. Acklam, A. Jacobsen, and H. P. Langtangen. Optimizing C++ kode for explicit finite difference schemes, Oslo Scientific Computing Archive, 1999.

X. Cai, H. P. Langtangen, and O. Munthe. An Object-Oriented Software Framework for Building Parallel Navier-Stokes Solvers, Talk at Parallel CFD'99, Williamsburg, Virgina, USA, 1999.

H. P. Langtangen. Advances in Computational Mechanics Software, Keynote lecture at The 12th NoACM Conference on Computational Mechanics, Helsinki, Finland, 1999.

H. P. Langtangen and G. Pedersen. Propagation of destructive flood waves, Talk at the 4th Annual ERCOFTAC Meeting of the Nordic Pilot Center, Brekstad, Norway, 1999.

X. Cai, H. P. Langtangen, B. F. Nielsen, and A. Tveito. A finite element method for fully nonlinear water waves, J. Comput. Physics 143(2):544-568, 1998.

E. Holm and H. P. Langtangen. A unified mesh refinement method with applications to porous media flow, International Journal for Numerical Methods in Fluids 28:679-702,, 1998.

H. P. Langtangen and G. Pedersen. Computational methods for weakly dispersive and nonlinear water waves, Computer Methods in Applied Mechanics and Engineering 160:337-358,, 1998.

H. P. Langtangen, T. Marthinsen, and J. Mathisen. A comparison of methods for the statistics of slow-drift oscillations, Probabilistic Engineering Mechanics 13(2):97-106,, 1998.

H. Osnes and H. P. Langtangen. A study of some finite difference schemes for a uni-directional stochastic treansport equation, SIAM Journal of Scientific Computing 19(3,), 1998.

H. Osnes and H. P. Langtangen. An improved probabilistic finite element method for stochastic groundwater flow, Advances in Water Resources 22:185-195,, 1998.

H. Osnes and H. P. Langtangen. A Study of Some Finite Difference Schemes for a Uni-Directional Stochastic Transport Equation, SIAM Journal of Scientific Computing 19(3):799-812,, 1998.

H. P. Langtangen and G. Pedersen. A Lagrangian Model for Run-Up of Shallow Water Waves, In: The proceedings of the Tenth International Conference on Finite Elements in Fluids, ed. by M. Hafez and J. C. Heinrich, Tuscon, Arizona, USA,, 1998.

X. Cai, A. M. Bruaset, H. P. Langtangen, G. Lines, K. Samuelsson, W. Shen, A. Tveito, and G. Zumbusch. Performance Modeling of PDE Solvers, Department of Informatics, University of Oslo, Preprint(1998-3), 1998.

H. P. Langtangen. Why Object-Oriented Programming is Useful in Numerical Applications; Introduction to C++; Object-Oriented Approaches to Finite Element solvers I and II; Solving Systems of PDEs by Assembling Independent Solvers for Each Scalar PDE; Parallelizing Explicit Finite Difference Schemes via Domain Decomposition and Reuse of Sequential Solvers; Parallelizing Implicit Solvers via Domain Decomposition and Reuse of Sequential Solvers, Invited talks at the Workshop on Object-Oriented Techniques for Finite Element Analysis and High-Performance Computing, University of Ume, Sweden, 1998.

H. P. Langtangen and H. Osnes. Stochastic Methods in Diffpack, Oslo Scientific Computing Archive, 1998.

H. P. Langtangen and G. Pedersen. A Lagrangian Model for Run-Up of Shallow Water Waves, Talk at the 10th International Conference on Finite Elements in Fluids, Tucson, Arizona, USA, 1998.

H. P. Langtangen and G. Pedersen. Finite Element Models for Tsunami Simulation, Talk at the International Conferance on Tsunamis, Paris, France, 1998.

G. Pedersen and H. P. Langtangen. An Analytic Approach to Tsunami Modeling, Talk at the International Conferance on Tsunamis, Paris, France, 1998.

G. Pedersen and H. P. Langtangen. Effects of Dispersion on Generation and Propagation of Tsunamis, Talk at the International Conferance on Tsunamis, Paris, France, 1998.

S. E. Arge, A. M. Bruaset, and H. P. Langtangen. Modern Software Tools for Scientific Computing, Birkhäuser, 1997.

A. M. Bruaset and H. P. Langtangen. Object-oriented design of preconditioned iterative methods in Diffpack, ACM Transactions on Mathematical Software 23(1):50-80,, 1997.

E. Arge, A. M. Bruaset, and H. P. Langtangen. Object-Oriented Numerics, In: Numerical Methods and Software Tools in Industrial Mathematics, ed. by M. Dhlen and A. Tveito, pp. 7-26, Birkhäuser,, 1997.

E. Arge, A. M. Bruaset, P. B. Calvin, J. F. Kanney, H. P. Langtangen, and C. T. Miller. On the Numerical Efficiency of C++ in Scientific Computing, In: Numerical Methods and Software Tools in Industrial Mathematics, ed. by M. Dhlen and A. Tveito, pp. 91-118, Birkhäuser,, 1997.

A. M. Bruaset and H. P. Langtangen. A comprehensive set of tools for solving partial differential equations; Diffpack, In: Numerical Methods and Software Tools in Industrial Mathematics, ed. by M. Dhlen and A. Tveito, pp. 61-90, Birkhäuser,, 1997.

A. M. Bruaset and H. P. Langtangen. Diffpack: A Software Environment for Rapid Prototyping of PDE Solvers, In: Proceedings of the 15th IMACS World Congress on Scientific Computation, Modeling and Applied Mathematics, ed. by A. Sydow, pp. 553-558, 1997.

A. M. Bruaset, X. Cai, H. P. Langtangen, and A. Tveito. Numerical Solution of PDEs on Parallel Computers Utilizing Sequential Simulators, In: Scientific Computing in Object-Oriented Parallel Environments, ed. by Y. Ishikawa and R. R. Oldehoeft and J. V. W. Reynders and M. Tholburn, pp. 161-168, Springer-Verlag. Lecture Notes in Computer Science, 1997.

A. M. Bruaset, E. Holm, and H. P. Langtangen. Increasing the Efficiency and Reliability of Numerical Software Development, In: Modern Software Tools for Scientific Computing, ed. by E. Arge and A. M. Bruaset and H. P. Langtangen, pp. 247-268, Birkhäuser,, 1997.

A. M. Bruaset, H. P. Langtangen, and G. W. Zumbusch. Domain decomposition and multilevel methods in Diffpack, In: Proceedings of the 9th Conference on Domain Decomposition, ed. by P. Bj\orstad and M. Espedal and D. Keyes, pp. 77-662, Cambridge,, 1997.

E. Andreassen, E. Gundersen, E. Hinrichsen, and H. P. Langtangen. A Mathematical Model for the Melt Spinning of Polymer Fibers, In: Numerical Methods and Software Tools in Industrial Mathematics, ed. by M. Dæhlen and A. Tveito,. Birkhäuser, 1997.

A. M. Bruaset and H. P. Langtangen. Basic tools for linear algebra, In: Numerical methods and Software Tools in Industrial Mathematics, ed. by M. Dæhlen and A. Tveito. Birkhäuser, pp. 27-44,, 1997.

E. Gundersen and H. P. Langtangen. Finite Element Methods for Two-Phase Flow in Heterogeneous Porous Media, In: Numerical Methods and Software Tools in Industrial Mathematics, ed. by M. Dæhlen and A. Tveito,. Birkhäuser, 1997.

E. Haug and H. P. Langtangen. The Basic Equations in Eulerian Continuum Mechanics, In: Numerical Methods and Software Tools in Industrial Mathematics, ed. by M. Dæhlen and A. Tveito,. Birkhäuser, 1997.

H. P. Langtangen and H. Osnes. Stochastic Methods in Diffpack, SINTEF, The Diffpack Preprint Series, 1997.

H. P. Langtangen and H. Osnes. An Object-Oriented Design of a Simulator for Stochastic Groundwater Flow, SINTEF, The Diffpack Preprint Series, 1997.

H. P. Langtangen and H. Osnes. A Clustered Weighted Integral Method for Stochastic Porous Media Flow, SINTEF, 1997.

J. Berge, H. Erlandsen, L. Ingebrigtsen, H. P. Langtangen, and H. Osnes. An Environment for Reservoir Simulation, Talk at the Fourth SIAM Conference on Computational and Mathematical Issues in the Geosciences, Albuquerque, New Mexico, USA, 1997.

A. M. Bruaset and H. P. Langtangen. The Diffpack software, Invited talk at the Workshop on PDE Software, Institute of Mathematics and Its Applications, Minneapolis, Minnesota, USA, 1997.

A. M. Bruaset and H. P. Langtangen. Diffpack: A Software Environment for Rapid Prototyping of PDE Solvers, Invited minisymposium talk at the 15th IMACS World Congress on Scientific Computation, Modelling and Applied Mathematics, Berlin, Germany, 1997.

A. M. Bruaset, X. Cai, H. P. Langtangen, and A. Tveito. Diffpack: An Object-Oriented Software Environment for Scientific Computing, Invited minisymposium talk at the Fourth US National Congress on Computational Mechanics, San Fransisco, 1997.

A. M. Bruaset, X. Cai, H. P. Langtangen, and A. Tveito. Numerical Solution of PDEs on Parallel Computers Utilizing Sequential Simulators, Talk at the ISCOPE Conference 1997, California, 1997.

A. M. Bruaset, X. Cai, H. P. Langtangen, A. Tveito, and G. W. Zumbusch. Design Issues and Recent Developments in Diffpack, Invited minisymposium talk at the SIAM Annual meeting, Stanford University, California, USA, 1997.

A. M. Bruaset, L. Ingebrigtsen, H. P. Langtangen, and T. Rusten. Software Design for Multiphase Flow Problems, Talk at the Fourth SIAM Conference on Computational and Mathematical Issues in the Geosciences, Albuquerque, New Mexico, USA, 1997.

H. P. Langtangen. Derivation of a Mathematical Model for Fiber Spinning, Preprint in Applied Mathematics, University of Oslo, 1997.

E. Arge, A. M. Bruaset, P. B. Calvin, J. F. Kanney, H. P. Langtangen, and C. T. Miller. Numerical Efficiency of C++ in Scientific Computing, Poster at the Conference on Advanced Simulation and Subsurface Flow and Transport, North Carolina Supercomputing Center, Research Triangle Park, North Carolina, USA, 1996.

A. M. Bruaset, E. Holm, and H. P. Langtangen. Increasing the efficiency and reliability of numerical software development, Talk at the International Workshop for Modern Software Tools in Scientific Computing, Oslo, Norway, 1996.

A. M. Bruaset, J. M. Kline, H. P. Langtangen, D. A. Larson, P. H. Merz, and T. Rusten. Industrial demands on numerical software; A case study, Talk at the International Workshop for Modern Software Tools in Scientific Computing, Oslo, Norway, 1996.

A. M. Bruaset, H. P. Langtangen, and G. W. Zumbusch. Domain decomposition and multilevel methods in Diffpack, Talk at the 9th International Conference on Domain Decomposition Methods, Ullensvang, Norway, 1996.

E. Holm and H. P. Langtangen. Object-oriented implementation of adaptive mesh refinement, Talk at the conference Grid Adaption in Computational PDEs: Theory and Applications, Edinburgh, Scotland, 1996.

H. P. Langtangen and G. Pedersen. Numerical methods for prediction of tsunamis, Talk at the XXV General Assembly of the ESC, Reykjavik, Iceland, 1996.

J. O. Nygaard, J. Grue, H. P. Langtangen, and K. M\orken. On adaptive spline and wavelet methods for an integral formulation of inviscid flow, Talk at the 12th GAMM-Seminar Kiel on Boundary Elements: Implementation and Analysis of Advanced Algorithms, Kiel, 1996.

H. P. Langtangen and G. Pedersen. Finite elements for the Boussinesq wave equations, In: Waves and Nonlinear Processes in Hydrodynamics, ed. by J. Grue and B. Gjevik and J.E. Weber. Kluwer Academic Publishers, pp. 117-126,, 1995.

A. M. Bruaset and H. P. Langtangen. Generic software tools for PDEs, Invited minisymposium talk at SIAM Annual Meeting, Charlotte, North Carolina, USA, 1995.

A. M. Bruaset and H. P. Langtangen. Generic software tools for PDEs, Invited seminar talk at the University of North Carolina, Chapel Hill, North Carolina, USA, 1995.

H. P. Langtangen. Statistical Modeling of the Breakthrough Time Function in Reservoir Simulation, Poster at the Third SIAM Conference on Computational and Mathematical Issues in the Geosciences, San Antonio, Texas, USA, 1995.

H. P. Langtangen and G. Pedersen. Finite Element Methods for Weakly Nonlinear and Dispersive Water Waves, Talk at the Third SIAM Conference on Computational and Mathematical Issues in the Geosciences, San Antonio, Texas, USA, 1995.

H. P. Langtangen. Numerical solution of first passage problems in random vibrations, SIAM Journal of Scientific and Statistical Computing 15:997-996,, 1994.

H. P. Langtangen. Diffpack: Software for partial differential equations, In: OON-SKI'94:Proceedings of the Second Annual Object-Oriented Numerics Conference, Sunriver, Oregon, USA,, 1994.

H. P. Langtangen. On object-oriented programming in the high-level design of numerical software, In: HERMIS'94 Proceedings of the 2nd Hellenic-European Conference on Mathematics and Informatics, Athens University of Economics and Buisness, ed. by Liptikakis, pp. 787-794, Athens, Greece,, 1994.

X. Cai and H. P. Langtangen. A B-spline Package in C++, SINTEF informatics, 1994.

A. M. Bruaset and H. P. Langtangen. Object-oriented design of preconditioned iterative methods, Talk at the Colorado Conference on Iterative Methods, Breckenridge, Colorado, USA, 1994.

H. P. Langtangen. Diffpack: Software for Differential Equations, Talk at The Second Annual Conference on Object-Oriented Numerics, Sunriver, Oregon, USA, 1994.

H. P. Langtangen and G. Pedersen. Simulation of Weakly Dispersive and Nonlinear Water Waves, Talk at the Symposium on Waves and Nonlinear Processes in Hydrodynamics, Oslo, 1994.

H. P. Langtangen. Stochastic breakthrough time analysis of an enhanced oil recovery process, SIAM Journal of Scientific and Statistical Computing 13:1394-1417,, 1992.

H. P. Langtangen, A. Tveito, and R. Winther. Instability of Buckley-Leverett flow in a heterogeneous medium, Transport in Porous Media 9:165-18,, 1992.

E. Arge, P. G. Holm, and H. P. Langtangen. A Self-Instructing Course in Numerical C++ Programming, Center for Industrial Research, SI-Report,, 1992.

M. Dæhlen, T. Dokken, P. Evensen, P. G. Holm, H. P. Langtangen, A. Mo, and A. Tveito. Industriell matematikk, SI, Research report,, 1992.

H. P. Langtangen. A Self-Instructing Course in Unix Utilities, Center for Industrial Research, SI-Report,, 1992.

H. P. Langtangen. A general numerical solution method for Fokker-Planck equations with applications to structural reliability, Probabilistic Engineering Mechanics 6(1):33-48,, 1991.

H. P. Langtangen. Sensitivity analysis of an enhanced oil recovery process, Applied Mathematical Modelling 15:467-474,, 1991.

M. Dæhlen, H. P. Langtangen, and A. Tveito. Some research projects in industrial mathematics, SI Research Report, 1991.

H. P. Langtangen. Finite Element Methods for Reservoir Simulation, Talk at the 3rd Seminar on Mathematical Models and Methods in Reservoir Simulation, Ustaoset, Norway, 1991.

H. P. Langtangen. Implicit finite element methods for two-phase flow in oil reservoirs, International Journal of Numerical Methods in Fluids 20:651-681,, 1990.

S. Finne, C. Futsaether, J. I. Botnan, and H. P. Langtangen. Three-dimensional analysis of solid propellant grains using a nonlinear viscoelastic model, In: Proceedings of The 26th Joint Propulsion Conference, Florida, USA,, 1990.

C. Futsaether, S. Finne, H. P. Langtangen, and J. I. Botnan. A general thermoviscoelastic material model, In: Proceedings of the International Conference on Numerical Methods in Engineering and Theory Practice (NUMETA 90), 1990.

H. P. Langtangen. Estimation of reliability of dynamic systems by numerical solution of Fokker-Planck and backward Kolmogorov equations, In: Proceedings of the first Conference in Stochastic Mechanics, ed. by Lars Sentler, pp. 41-48, Lund, Sweden,, 1990.

H. P. Langtangen. Deterministic and Stochastic Sensitivity Analysis of a Mathematical Model for Polymer Flooding, Department of Mathematics, University of Oslo, Preprint Series in Applied Mathematics,, 1990.

H. P. Langtangen and T. Marthinsen. FOKPLA: A Program For Numerical Solution of Fokker-Planck Equations. Theory and User's manual, Saga Petroleum, 1990.

S. Finne, C. Futsaether, J. I. Botnan, and H. P. Langtangen. Three-dimensional analysis of solid propellant grains using a nonlinear viscoelastic model, Talk at the 26th Joint Propulsion Conference, Florida, USA, 1990.

C. Futsaether, S. Finne, H. P. Langtangen, and J. I. Botnan. A general thermoviscoelastic material model, Talk at the International Conference on Numerical Methods in Engineering and Theory Practice (NUMETA 90), 1990.

H. P. Langtangen. Estimation of Reliability of Dynamic Systems by Numerical Solution of Fokker-Planck and backward Kolmogorov Equations, Talk at the First Conference in Stochastic Mechanics, Lund, Sweden, 1990.

H. P. Langtangen. Computational Methods for Two-Phase Flow in Oil Reservoirs, PhD thesis, Mechanics Division, Department of Mathematics, University of Oslo, 1989.

H. P. Langtangen. A method for smoothing derivatives of multilinear finite element fields, Communications in Applied Numerical Methods 5:275-281,, 1989.

H. P. Langtangen. Conjugate gradient methods and ILU preconditioning of non-symmetric matrix systems with arbitrary sparsity patterns, International Journal of Numerical Methods in Fluids 10:213-223,, 1989.

H. P. Langtangen. The FEMDEQS Program System, Mechanics Division, Department of Mathematics, University of Oslo, Research Report in Mechanics,, 1989.

H. P. Langtangen and A. Tveito. A numerical comparison of conjugate gradient-like methods, Communications in Applied Numerical Methods 4:793-798,, 1988.

H. P. Langtangen. Preconditioning of Sparse Non-Symmetric Linear Systems, Mechanics Division, Department of Mathematics, University of Oslo, Research Report in Mechanics,, 1988.

H. P. Langtangen. Finite Elements and Iterative Methods for Compressible and Incompressible Thermoelasticity, Mechanics Division, Department of Mathematics, University of Oslo, Research Report in Mechanics,, 1988.

H. P. Langtangen. Influence of the startvector, variational formulation and mesh refinements on iterative equation solvers, Mechanics Division, Department of Mathematics, University of Oslo, Research Report in Mechanics,, 1988.

H. P. Langtangen, T. Rusten, A. Tveito, and S. \. Wille. An element by element preconditioner for iterative equation solvers, In: Proceedings of the 2nd international conference on Finite Element Methods in Water Resources, Lisboa, Portugal, ed. by Brebbia et al.,, 1986.

H. P. Langtangen, T. Rusten, A. Tveito, and S. \. Wille. An element by element preconditioner for iterative equation solvers, Talk at the 2nd International Conference on Finite Element Methods in Water Resources, Lisboa, Portugal, 1986.

H. P. Langtangen. L\osning av Navier-Stokes likning med elementmetoden i to og tre dimensjoner, Masters thesis, Mechanics Division, Department of Mathematics, University of Oslo, 1985.