Modified Douglas splitting methods for reaction–diffusion equations A Arrarás, KJ in’t Hout, W Hundsdorfer, L Portero BIT Numerical Mathematics 57, 261-285, 2017 | 22 | 2017 |

Geometric multigrid methods for Darcy–Forchheimer flow in fractured porous media A Arrarás, FJ Gaspar, L Portero, C Rodrigo Computers & Mathematics with Applications 78 (9), 3139-3151, 2019 | 19 | 2019 |

Improved accuracy for time-splitting methods for the numerical solution of parabolic equations A Arrarás, L Portero Applied Mathematics and Computation 267, 294-303, 2015 | 15 | 2015 |

Convergence of fractional step mimetic finite difference discretizations for semilinear parabolic problems A Arrarás, L Portero, JC Jorge Applied numerical mathematics 60 (4), 473-485, 2010 | 14 | 2010 |

Domain decomposition multigrid methods for nonlinear reaction–diffusion problems A Arrarás, FJ Gaspar, L Portero, C Rodrigo Communications in Nonlinear Science and Numerical Simulation 20 (3), 699-710, 2015 | 13 | 2015 |

A combined mixed finite element ADI scheme for solving Richards' equation with mixed derivatives on irregular grids A Arrarás, L Portero, JC Jorge Applied numerical mathematics 59 (3-4), 454-467, 2009 | 13 | 2009 |

Error analysis of multipoint flux domain decomposition methods for evolutionary diffusion problems A Arrarás, L Portero, I Yotov Journal of Computational Physics 257, 1321-1351, 2014 | 12 | 2014 |

Contractivity of domain decomposition splitting methods for nonlinear parabolic problems L Portero, A Arrarás, JC Jorge Journal of computational and applied mathematics 234 (4), 1078-1087, 2010 | 10 | 2010 |

Mixed-dimensional geometric multigrid methods for single-phase flow in fractured porous media A Arrarás, FJ Gaspar, L Portero, C Rodrigo SIAM Journal on Scientific Computing 41 (5), B1082-B1114, 2019 | 8 | 2019 |

Multigrid solvers for multipoint flux approximations of the Darcy problem on rough quadrilateral grids A Arrarás, FJ Gaspar, L Portero, C Rodrigo Computational Geosciences 25, 715-730, 2021 | 7 | 2021 |

Domain decomposition operator splitting for mimetic finite difference discretizations of non-stationary problems L Portero, A Arrarás, JC Jorge Computers & fluids 46 (1), 398-403, 2011 | 7 | 2011 |

KJ in't Hout, W. Hundsdorfer, and L. Portero A Arrarás Modified Douglas splitting methods for reaction-diffusion equations, 261-285, 2017 | 6 | 2017 |

Variable step-size fractional step Runge–Kutta methods for time-dependent partial differential equations L Portero, A Arrarás, JC Jorge Applied Numerical Mathematics 62 (10), 1463-1476, 2012 | 6 | 2012 |

Locally linearized fractional step methods for nonlinear parabolic problems A Arrarás, L Portero, JC Jorge Journal of computational and applied mathematics 234 (4), 1117-1128, 2010 | 6 | 2010 |

Multipoint flux mixed finite element methods for slightly compressible flow in porous media A Arrarás, L Portero Computers & Mathematics with Applications 77 (6), 1437-1452, 2019 | 5 | 2019 |

EXPANDED MIXED FINITE ELEMENT DOMAIN DECOMPOSITION METHODS ON TRIANGULAR GRIDS. A Arraras, L Portero International Journal of Numerical Analysis & Modeling 11 (2), 2014 | 5 | 2014 |

An alternating direction finite difference method for three-dimensional flow in unsaturated porous media A Arrarás, JC Jorge Mathematical Modelling and Analysis, 57-64, 2005 | 5 | 2005 |

Linearly implicit domain decomposition methods for nonlinear time-dependent reaction-diffusion problems A Arrarás, L Portero, JC Jorge Domain decomposition methods in science and engineering XVIII, 267-274, 2009 | 3 | 2009 |

Monolithic mixed-dimensional multigrid methods for single-phase flow in fractured porous media A Arrarás, FJ Gaspar, L Portero, C Rodrigo arXiv preprint arXiv:1811.01264, 2018 | 2 | 2018 |

Reprint of Domain decomposition multigrid methods for nonlinear reaction–diffusion problems A Arrarás, FJ Gaspar, L Portero, C Rodrigo Communications in Nonlinear Science and Numerical Simulation 21 (1-3), 22-33, 2015 | 1 | 2015 |