Motreanu%2C%20Dumitru
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Dumitru Motreanu,
Viorica V.Motreanu,
Nikolaos S.Papageorgiou,
Multiple Constant Sign and Nodal Solutions for Nonlinear Neumann Eigenvalue Problems,
ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE: 2011: VOL. X, ISSUE 3
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