Elliptic operators with general Wentzell boundary conditions, analytic semigroups and the angle concavity theorem A Favini, GR Goldstein, JA Goldstein, E Obrecht, S Romanelli Mathematische Nachrichten 283 (4), 504-521, 2010 | 46 | 2010 |

The role of Wentzell boundary conditions in linear and nonlinear analysis GM Coclite, A Favini, CG Gal, GR Goldstein, JA Goldstein, E Obrecht, ... Tübinger Berichte 132, 2008 | 42 | 2008 |

Conditions for parabolicity of second order abstract differential equations A Favini, E Obrecht Differential and Integral Equations 4 (5), 1005-1022, 1991 | 39 | 1991 |

Evolution operators for higher order abstract parabolic equations E Obrecht Czechoslovak Mathematical Journal 36 (2), 210-222, 1986 | 27 | 1986 |

The Cauchy problem for time-dependent abstract parabolic equations of higher order E Obrecht Journal of mathematical analysis and applications 125 (2), 508-530, 1987 | 21 | 1987 |

The Laplacian with generalized Wentzell boundary conditions A Favini, GR Goldstein, JA Goldstein, E Obrecht, S Romanelli Evolution Equations: Applications to Physics, Industry, Life Sciences and …, 2003 | 17 | 2003 |

Sul problema di Cauchy per le equazioni paraboliche astratte di ordine E Obrecht Rendiconti del Seminario Matematico della Università di Padova 53, 231-256, 1975 | 17 | 1975 |

General Wentzell Boundary Conditions and Analytic Semigroups on *W* ^{1,} * *^{p} (0, 1)A Favini, GR Goldstein, JA Goldstein, E Obrecht, S Romanelli Applicable Analysis 82 (9), 927-935, 2003 | 15 | 2003 |

Parabolic problems with mixed time dependent lateral conditlons A Bove, B Franchi, E Obrecht Communications in Partial Differential Equations 7 (11), 1253-1288, 1982 | 11 | 1982 |

Boundary value problems with mixed lateral conditions for parabolic operators A Bove, B Franchi, E Obrecht Annali di Matematica Pura ed Applicata 131 (1), 375-413, 1982 | 10 | 1982 |

Structure of solutions to linear evolution equations: Extensions of d'Alembert's formula GR Goldstein, JA Goldstein, E Obrecht Journal of mathematical analysis and applications 201 (2), 461-477, 1996 | 8 | 1996 |

Nonsymmetric elliptic operators with Wentzell boundary conditions in general domains A Favini, GR Goldstein, JA Goldstein, E Obrecht, S Romanelli Communications on Pure & Applied Analysis 15 (6), 2475, 2016 | 6 | 2016 |

A BOUNDARY VALUE PROBLEM FOR ELLIPTIC EQUATIONS WITH POLYNOMIAL COEFFICIENTS IN A HALF SPACE. I: PSEUDODIFFERENTIAL OPERATORS AND FUNCTION SPACES A Bove | 6 | 1981 |

On a class of semilinear evolution equations for vector potentials associated with Maxwell’s equations in Carnot groups B Franchi, E Obrecht, E Vecchi Nonlinear Analysis: Theory, Methods & Applications 90, 56-69, 2013 | 5 | 2013 |

The role of Wentzell boundary conditions in linear and nonlinear analysis, Advances in Nonlinear Analysis: Theory, Methods and Applications (S. Sivasundaran Ed.), vol. 3 GM Coclite, A Favini, CG Gal, GR Goldstein, JA Goldstein, E Obrecht, ... Cambridge Scientific Publishers Ltd., Cambridge, 2009 | 5 | 2009 |

Second order absbract parabolic equations E Obrecht Semesterbericht Funktionalanalysis Tübingen, Sommersemester, 191-206, 1986 | 5 | 1986 |

Straightening of a noncylindrical region and evolution equations A Bove, B Franchi, E Obrecht Rendiconti del Seminario Matematico della Università di Padova 71, 209-216, 1984 | 5 | 1984 |

Phase space for an n-th order differential equation in Banach space, Semigroup Theory and Evolution Equations (Proceedings Delft 1989)(P. Clément, E. Mitidieri, and B. de … E Obrecht Lect. Notes in Pure and Appl. Math 135, 391-399, 0 | 5 | |

Uniformly elliptic operators in divergence form and general Wentzell boundary conditions A Favini, GR Goldstein, JA Goldstein, E Obrecht, S Romanelli Preprint, 2007 | 4 | 2007 |

Differential equations in Banach spaces: proceedings of a conference held in Bologna, July 2-5, 1985 A Favini, E Obrecht Springer, 2006 | 4 | 2006 |