Liouville theorems for semilinear equations on the Heisenberg group I Birindelli, IC Dolcetta, A Cutri Annales de l'Institut Henri Poincaré C, Analyse non linéaire 14 (3), 295-308, 1997 | 117 | 1997 |

Eigenvalue, maximum principle and regularity for fully non linear homogeneous operators I Birindelli, F Demengel arXiv preprint math/0609612, 2006 | 116 | 2006 |

Comparison principle and Liouville type results for singular fully nonlinear operators I Birindelli, F Demengel Annales de la Faculté des sciences de Toulouse: Mathématiques 13 (2), 261-287, 2004 | 114 | 2004 |

First eigenvalue and maximum principle for fully nonlinear singular operators I Birindelli, F Demengel | 100 | 2006 |

Liouville theorems for elliptic inequalities and applications I Birindelli, E Mitidieri Proceedings of the Royal Society of Edinburgh Section A: Mathematics 128 (6 …, 1998 | 100 | 1998 |

Hopf′ s Lemma and Anti-maximum Principle in General Domains I Birindelli Journal of differential equations 119 (2), 450-472, 1995 | 73 | 1995 |

Nonlinear Liouville theorems in the Heisenberg group via the moving plane method I Birindelli, J Prajapat | 65 | 1999 |

𝒞1, β regularity for Dirichlet problems associated to fully nonlinear degenerate elliptic equations I Birindelli, F Demengel ESAIM: Control, Optimisation and Calculus of Variations 20 (4), 1009-1024, 2014 | 62 | 2014 |

A semi-linear problem for the Heisenberg Laplacian I Birindelli, A Cutrì Rendiconti del Seminario Matematico della Universita di Padova 94, 137-153, 1995 | 59 | 1995 |

Regularity and uniqueness of the first eigenfunction for singular fully nonlinear operators I Birindelli, F Demengel Journal of Differential Equations 249 (5), 1089-1110, 2010 | 57 | 2010 |

A family of degenerate elliptic operators: maximum principle and its consequences I Birindelli, G Galise, H Ishii Annales de l'Institut Henri Poincaré C, Analyse non linéaire 35 (2), 417-441, 2018 | 53 | 2018 |

The Dirichlet problem for singular fully nonlinear operators I Birindelli, F Demengel arXiv preprint math/0609610, 2006 | 44 | 2006 |

A negative answer to a one-dimensional symmetry problem in the Heisenberg group I Birindelli, E Lanconelli arXiv preprint math/0108198, 2001 | 37 | 2001 |

The existence of the principal eigenvalue for cooperative elliptic systems in a general domain I Birindelli, E Mitidieri, G Sweers DIFFERENTIAL EQUATIONS C/C OF DIFFERENTSIAL'NYE URAVNENIIA-MINSK- 35, 326-334, 1999 | 36 | 1999 |

Liouville theorems for a family of very degenerate elliptic nonlinear operators I Birindelli, G Galise, F Leoni Nonlinear Analysis 161, 198-211, 2017 | 35 | 2017 |

Eigenvalue and Dirichlet problem for fully-nonlinear operators in non-smooth domains I Birindelli, F Demengel Journal of mathematical analysis and applications 352 (2), 822-835, 2009 | 31 | 2009 |

Monotonicity and symmetry results for degenerate elliptic equations on nilpotent Lie groups I Birindelli, J Prajapat Pacific journal of mathematics 204 (1), 1-17, 2002 | 31 | 2002 |

Some Liouville theorems for the p-Laplacian I Birindelli, F Demengel arXiv preprint math/0106231, 2001 | 31 | 2001 |

Homogenization of Hamilton-Jacobi equations in the Heisenberg group I Birindelli, J Wigniolle Commun. Pure Appl. Anal 2 (4), 461-479, 2003 | 28 | 2003 |

ABP and global Holder estimates for fully nonlinear elliptic equations in unbounded domains I Birindelli, IC Dolcetta, A Vitolo arXiv preprint arXiv:1407.7116, 2014 | 23 | 2014 |