Comparison of two-level preconditioners derived from deflation, domain decomposition and multigrid methods JM Tang, R Nabben, C Vuik, YA Erlangga Journal of scientific computing 39 (3), 340-370, 2009 | 113 | 2009 |

A comparison of deflation and coarse grid correction applied to porous media flow R Nabben, C Vuik SIAM Journal on Numerical Analysis 42 (4), 1631-1647, 2004 | 106 | 2004 |

Algebraic theory of multiplicative Schwarz methods M Benzi, A Frommer, R Nabben, DB Szyld Numerische Mathematik 89 (4), 605-639, 2001 | 98 | 2001 |

A comparison of deflation and the balancing preconditioner R Nabben, C Vuik SIAM Journal on Scientific Computing 27 (5), 1742-1759, 2006 | 85 | 2006 |

A note on comparison theorems for splittings and multisplittings of Hermitian positive definite matrices R Nabben Linear Algebra and its Applications 233, 67-80, 1996 | 84 | 1996 |

A linear algebra proof that the inverse of a strictly ultrametric matrix is a strictly diagonally dominant Stieltjes matrix R Nabben, RS Varga SIAM Journal on Matrix Analysis and Applications 15 (1), 107-113, 1994 | 77 | 1994 |

Decay rates of the inverse of nonsymmetric tridiagonal and band matrices R Nabben SIAM Journal on Matrix Analysis and Applications 20 (3), 820-837, 1999 | 75 | 1999 |

On a multilevel Krylov method for the Helmholtz equation preconditioned by shifted Laplacian YA Erlangga, R Nabben Electronic Transactions on Numerical Analysis 31 (403-424), 3, 2008 | 70 | 2008 |

A framework for deflated and augmented Krylov subspace methods A Gaul, MH Gutknecht, J Liesen, R Nabben SIAM Journal on Matrix Analysis and Applications 34 (2), 495-518, 2013 | 60 | 2013 |

A comparison of two-level preconditioners based on multigrid and deflation JM Tang, SP MacLachlan, R Nabben, C Vuik SIAM Journal on Matrix Analysis and Applications 31 (4), 1715-1739, 2010 | 58 | 2010 |

Deflation and balancing preconditioners for Krylov subspace methods applied to nonsymmetric matrices YA Erlangga, R Nabben SIAM Journal on Matrix Analysis and Applications 30 (2), 684-699, 2008 | 57 | 2008 |

Multilevel projection-based nested Krylov iteration for boundary value problems YA Erlangga, R Nabben SIAM Journal on Scientific Computing 30 (3), 1572-1595, 2008 | 51 | 2008 |

Generalized ultrametric matrices—a class of inverse M-matrices R Nabben, RS Varga Linear Algebra and its Applications 220, 365-390, 1995 | 48 | 1995 |

Two-sided bounds on the inverses of diagonally dominant tridiagonal matrices R Nabben Linear Algebra and its Applications 287 (1-3), 289-305, 1999 | 47 | 1999 |

Orthogonal bases that lead to symmetric nonnegative matrices L Elsner, R Nabben, M Neumann Linear Algebra and its Applications 271 (1-3), 323-343, 1998 | 42 | 1998 |

A comparison of abstract versions of deflation, balancing and additive coarse grid correction preconditioners R Nabben, C Vuik Numerical Linear Algebra with Applications 15 (4), 355-372, 2008 | 36 | 2008 |

Convergence theory of restricted multiplicative Schwarz methods R Nabben, DB Szyld SIAM Journal on Numerical Analysis 40 (6), 2318-2336, 2002 | 31 | 2002 |

Comparisons between multiplicative and additive Schwarz iterations in domain decomposition methods R Nabben Numerische Mathematik 95 (1), 145-162, 2003 | 29 | 2003 |

On Green's matrices of trees R Nabben SIAM Journal on Matrix Analysis and Applications 22 (4), 1014-1026, 2001 | 24 | 2001 |

On symmetric ultrametric matrices RS Varga, R Nabben Numerical linear algebra, 193-199, 1993 | 24 | 1993 |