Mechanical systems of rigid bodies subject to unilateral constraints P Lötstedt SIAM Journal on Applied Mathematics 42 (2), 281-296, 1982 | 442 | 1982 |

Coulomb friction in two-dimensional rigid body systems P Lötstedt Zeitschrift für angewandte Mathematik und Mechanik 61 (12), 605-615, 1981 | 340 | 1981 |

Numerical solution of nonlinear differential equations with algebraic constraints. I. Convergence results for backward differentiation formulas P Lötstedt, L Petzold Mathematics of computation 46 (174), 491-516, 1986 | 240 | 1986 |

Numerical simulation of time-dependent contact and friction problems in rigid body mechanics P Lötstedt SIAM journal on scientific and statistical computing 5 (2), 370-393, 1984 | 213 | 1984 |

Numerical solution of nonlinear differential equations with algebraic constraints II: Practical implications L Petzold, P Lötstedt SIAM Journal on Scientific and Statistical Computing 7 (3), 720-733, 1986 | 195 | 1986 |

Simulation of stochastic reaction-diffusion processes on unstructured meshes S Engblom, L Ferm, A Hellander, P Lötstedt SIAM Journal on Scientific Computing 31 (3), 1774-1797, 2009 | 174 | 2009 |

Nonlinear filters for efficient shock computation B Engquist, P Lötstedt, B Sjögreen Mathematics of computation 52 (186), 509-537, 1989 | 149 | 1989 |

Fokker–Planck approximation of the master equation in molecular biology P Sjöberg, P Lötstedt, J Elf Computing and Visualization in Science 12 (1), 37-50, 2009 | 109 | 2009 |

Hybrid method for the chemical master equation A Hellander, P Lötstedt Journal of Computational Physics 227 (1), 100-122, 2007 | 105 | 2007 |

Space–time adaptive finite difference method for European multi-asset options P Lötstedt, J Persson, L von Sydow, J Tysk Computers & Mathematics with Applications 53 (8), 1159-1180, 2007 | 79 | 2007 |

An adaptive algorithm for simulation of stochastic reaction–diffusion processes L Ferm, A Hellander, P Lötstedt Journal of Computational Physics 229 (2), 343-360, 2010 | 74 | 2010 |

A hierarchy of approximations of the master equation scaled by a size parameter L Ferm, P Lötstedt, A Hellander Journal of Scientific Computing 34 (2), 127-151, 2008 | 71 | 2008 |

An unconditionally stable subcell model for arbitrarily oriented thin wires in the FETD method F Edelvik, G Ledfelt, P Lotstedt, DJ Riley IEEE Transactions on Antennas and Propagation 51 (8), 1797-1805, 2003 | 67 | 2003 |

Stochastic simulation service: bridging the gap between the computational expert and the biologist B Drawert, A Hellander, B Bales, D Banerjee, G Bellesia, BJ Daigle Jr, ... PLoS computational biology 12 (12), e1005220, 2016 | 66 | 2016 |

Solving the minimal least squares problem subject to bounds on the variables P Lötstedt BIT Numerical Mathematics 24 (2), 205-224, 1984 | 60 | 1984 |

Coupled mesoscopic and microscopic simulation of stochastic reaction-diffusion processes in mixed dimensions A Hellander, S Hellander, P Lötstedt Multiscale Modeling & Simulation 10 (2), 585-611, 2012 | 59 | 2012 |

High order accurate solution of the incompressible Navier–Stokes equations A Brüger, B Gustafsson, P Lötstedt, J Nilsson Journal of Computational Physics 203 (1), 49-71, 2005 | 56 | 2005 |

Implicit solution of hyperbolic equations with space-time adaptivity P Lötstedt, S Söderberg, A Ramage, L Hemmingsson-Frändén BIT Numerical Mathematics 42 (1), 134-158, 2002 | 48 | 2002 |

Boundary values and finite difference methods for the single factor term structure equation E Ekström, P Lötstedt, J Tysk Applied Mathematical Finance 16 (3), 253-259, 2009 | 47 | 2009 |

Sparse grids and hybrid methods for the chemical master equation M Hegland, A Hellander, P Lötstedt BIT Numerical Mathematics 48 (2), 265-283, 2008 | 44 | 2008 |