Introduction to hierarchical matrices with applications S Börm, L Grasedyck, W Hackbusch Engineering Analysis with Boundary Elements 27 (5), 405-422, 2003 | 636 | 2003 |

Data-sparse Approximation by Adaptive H2-Matrices W Hackbusch, S Börm Computing 69 (1), 1-35, 2002 | 297 | 2002 |

Efficient numerical methods for non-local operators: H2-matrix compression, algorithms and analysis S Börm European Mathematical Society, 2010 | 238 | 2010 |

Hybrid cross approximation of integral operators S Börm, L Grasedyck Numerische Mathematik 101 (2), 221-249, 2005 | 204 | 2005 |

Hybrid cross approximation of integral operators S Börm, L Grasedyck Numerische Mathematik 101 (2), 221-249, 2005 | 204 | 2005 |

H2-matrix approximation of integral operators by interpolation W Hackbusch, S Börm Applied Numerical Mathematics 43 (1-2), 129-143, 2002 | 177 | 2002 |

H2-matrix approximation of integral operators by interpolation W Hackbusch, S Börm Applied Numerical Mathematics 43 (1-2), 129-143, 2002 | 177 | 2002 |

Hierarchical matrices S Börm, L Grasedyck, W Hackbusch Lecture notes 21, 2003, 2003 | 162* | 2003 |

An introduction to hierarchical matrices W Hackbusch, L Grasedyck, S Börm | 103 | 2001 |

Low-rank approximation of integral operators by interpolation S Börm, L Grasedyck Computing 72 (3), 325-332, 2004 | 97 | 2004 |

Approximation of integral operators by variable-order interpolation S Börm, M Löhndorf, JM Melenk Numerische Mathematik 99 (4), 605-643, 2005 | 85 | 2005 |

H2-Matrix Arithmetics in Linear Complexity S Börm Computing 77 (1), 1-28, 2006 | 77 | 2006 |

Approximation of solution operators of elliptic partial differential equations by - and -matrices S Börm Numerische Mathematik 115 (2), 165-193, 2010 | 74 | 2010 |

Analysis of tensor product multigrid S Börm, R Hiptmair Numerical Algorithms 26 (3), 219-234, 2001 | 60 | 2001 |

H2-matrices – Multilevel methods for the approximation of integral operators S Börm Computing and Visualization in Science 7 (3-4), 173-181, 2004 | 56 | 2004 |

Construction of data-sparse H2-matrices by hierarchical compression S Börm SIAM Journal on Scientific Computing 31 (3), 1820-1839, 2009 | 47 | 2009 |

Approximating Gaussian Processes with H2-Matrices S Börm, J Garcke Machine Learning: ECML 2007, 42-53, 2007 | 44 | 2007 |

H‐LU factorization in preconditioners for augmented Lagrangian and grad‐div stabilized saddle point systems S Börm, S Le Borne International Journal for Numerical Methods in Fluids 68 (1), 83-98, 2012 | 43 | 2012 |

Efficient numerical methods for non-local operators, volume 14 of EMS Tracts in Mathematics S Börm European Mathematical Society (EMS), Zürich, 2010 | 42 | 2010 |

Data-sparse approximation of non-local operators by H2-matrices S Börm Linear algebra and its applications 422 (2-3), 380-403, 2007 | 42 | 2007 |