Degree theory for operators of monotone type and nonlinear elliptic equations with inequality constraints S Aizicovici, NS Papageorgiou, V Staicu American Mathematical Soc., 2008 | 238 | 2008 |

Continuous selections of solution sets of Lipschitzean differential inclusions RM Colombo, A Fryszkowski, T Rzezuchowski, V Staicu Funkcial. Ekvac 34 (2), 321-330, 1991 | 86 | 1991 |

Multivalued evolution equations with nonlocal initial conditions in Banach spaces S Aizicovici, V Staicu Nonlinear Differential Equations and Applications NoDEA 14 (3), 361-376, 2007 | 83 | 2007 |

Existence of multiple solutions with precise sign information for superlinear Neumann problems S Aizicovici, NS Papageorgiou, V Staicu Annali di Matematica Pura ed Applicata 188, 679-719, 2009 | 66 | 2009 |

A multiplicity theorem for hemivariational inequalities with ap-Laplacian-like differential operator NS Papageorgiou, EM Rocha, V Staicu Nonlinear Analysis: Theory, Methods & Applications 69 (4), 1150-1163, 2008 | 52 | 2008 |

THE SPECTRUM AND AN INDEX FORMULA FOR THE NEUMANN p− LAPLACIAN AND MULTIPLE SOLUTIONS FOR PROBLEMS WITH A CROSSING NONLINEARITY S Aizicovici, NS Papageorgiou, V STAICU RN 510, 2, 2009 | 50 | 2009 |

Continuous selections of solution sets to evolution equations V Staicu Proceedings of the American Mathematical Society 113 (2), 403-413, 1991 | 43 | 1991 |

On nonconvex perturbations of maximal monotone differential inclusions A Bressan, V Staicu Set-Valued Analysis 2, 415-437, 1994 | 42 | 1994 |

On evolution equations having monotonicities of opposite sign A Cellina, V Staicu J. Differential Equations 90, 71-80, 1991 | 41 | 1991 |

Topological properties of nonconvex differential inclusions of evolution type FS De Blasi, G Pianigiani, V Staicu Nonlinear Analysis: Theory, Methods & Applications 24 (5), 711-720, 1995 | 40 | 1995 |

On the set of solutions to a class of nonconvex nonclosed differential inclusions SA Marano, V Staicu Acta Mathematica Hungarica 76 (4), 287-301, 1997 | 39 | 1997 |

Nodal solutions for (𝑝, 2)-equations S Aizicovici, N Papageorgiou, V Staicu Transactions of the American Mathematical Society 367 (10), 7343-7372, 2015 | 36 | 2015 |

Periodic solutions for second order differential inclusions with the scalar p-Laplacian S Aizicovici, NS Papageorgiou, V Staicu Journal of mathematical analysis and applications 322 (2), 913-929, 2006 | 35 | 2006 |

On the solution sets of some nonconvex hyperbolic differential inclusions FS Blasi, G Pianigiani, V Staicu Czechoslovak Mathematical Journal 45 (1), 107-116, 1995 | 35 | 1995 |

The Bellman equation for time-optimal control of noncontrollable, nonlinear systems M Bardi, V Staicu Acta Applicandae Mathematica 31 (3), 201-223, 1993 | 35 | 1993 |

Multiple nontrivial solutions for nonlinear periodic problems with the p-Laplacian S Aizicovici, NS Papageorgiou, V Staicu Journal of Differential Equations 243 (2), 504-535, 2007 | 29 | 2007 |

On *p*-superlinear equations with a nonhomogeneous differential operatorS Aizicovici, NS Papageorgiou, V Staicu Nonlinear Differential Equations and Applications NoDEA 20, 151-175, 2013 | 28 | 2013 |

The method of upper–lower solutions for nonlinear second order differential inclusions NS Papageorgiou, V Staicu Nonlinear Analysis: Theory, Methods & Applications 67 (3), 708-726, 2007 | 25 | 2007 |

Nonlinear resonant periodic problems with concave terms S Aizicovici, NS Papageorgiou, V Staicu Journal of mathematical analysis and applications 375 (1), 342-364, 2011 | 24 | 2011 |

ARCWISE CONNECTEDNESS OF SOLUTION SETS TO LIPSCHITZEAN DIFFERENTIAL-INCLUSIONS V Staicu, H Wu Bollettino della Unione Matematica Italiana 5 (2), 253-256, 1991 | 24 | 1991 |