Pseudodifferential operators on differential groupoids V Nistor, A Weinstein, P Xu Pacific journal of mathematics 189 (1), 117-152, 1999 | 275 | 1999 |

Cyclic cohomology of etale groupoids JL Brylinski, V Nistor K-theory 8 (4), 341-365, 1994 | 118 | 1994 |

Homology of pseudodifferential operators I. Manifolds with boundary RB Melrose, V Nistor arXiv preprint funct-an/9606005, 1996 | 117 | 1996 |

Group cohomology and the cyclic cohomology of crossed products V Nistor Inventiones mathematicae 99 (1), 411-424, 1990 | 115 | 1990 |

Pseudodifferential analysis on continuous family groupoids R Lauter, B Monthubert, V Nistor Documenta Mathematica 5, 625-655, 2000 | 107 | 2000 |

Improving the rate of convergence of ‘high order finite elements’ on polygons and domains with cusps C Băcuţă, V Nistor, LT Zikatanov Numerische Mathematik 100, 165-184, 2005 | 105 | 2005 |

Pseudodifferential operators on manifolds with a Lie structure at infinity B Ammann, R Lauter, V Nistor Annals of Mathematics, 717-747, 2007 | 98 | 2007 |

Well-posedness and regularity for the elasticity equation with mixed boundary conditions on polyhedral domains and domains with cracks AL Mazzucato, V Nistor Archive for rational mechanics and analysis 195 (1), 25-73, 2010 | 94 | 2010 |

Analysis of geometric operators on open manifolds: a groupoid approach R Lauter, V Nistor Quantization of singular symplectic quotients, 181-229, 2001 | 87 | 2001 |

On the geometry of Riemannian manifolds with a Lie structure at infinity B Ammann, R Lauter, V Nistor International Journal of Mathematics and Mathematical Sciences 2004, 161-193, 2004 | 86 | 2004 |

Analysis of the finite element method for transmission/mixed boundary value problems on general polygonal domains H Li, A Mazzucato, V Nistor Electron. Trans. Numer. Anal 37, 41-69, 2010 | 82 | 2010 |

Sobolev spaces on Lie manifolds and regularity for polyhedral domains B Ammann, AD Ionescu, V Nistor Documenta Mathematica 11, 161-206, 2006 | 80 | 2006 |

A Bivariant Chern--Connes Character V Nistor Annals of Mathematics, 555-590, 1993 | 77 | 1993 |

Improving the Rate of Convergence of High-Order Finite Elements on Polyhedra I: *A Priori* EstimatesC Bacuta, V Nistor, LT Zikatanov Numerical Functional Analysis and Optimization 26 (6), 613-639, 2005 | 69 | 2005 |

Groupoids and the integration of Lie algebroids V Nistor Journal of the Mathematical Society of Japan 52 (4), 847-868, 2000 | 67 | 2000 |

Higher index theorems and the boundary map in cyclic cohomology V Nistor Documenta Mathematica 2, 263-295, 1997 | 66 | 1997 |

K-theory of C*-algebras of b-pseudodifferential operators R Melrose, V Nistor Geometric & Functional Analysis GAFA 8 (1), 88-122, 1998 | 65 | 1998 |

Stable range for tensor products of extensions of 𝒦 by C (X) V Nistor Journal of Operator Theory, 387-396, 1986 | 62 | 1986 |

Interface and mixed boundary value problems on -dimensional polyhedral domains C Bacuta, AL Mazzucato, V Nistor, L Zikatanov Documenta Mathematica 15, 687-745, 2010 | 60 | 2010 |

Analysis of a modified Schrödinger operator in 2D: regularity, index, and FEM H Li, V Nistor Journal of Computational and Applied Mathematics 224 (1), 320-338, 2009 | 51 | 2009 |