Multiple Constant Sign and Nodal Solutions for Nonlinear Neumann Eigenvalue Problems Article Sidebar Download Article PDF Download Article Abstract PDF Submitted: Feb 23, 2010 Accepted: Jul 10, 2010 Published: Oct 5, 2011 DOI: https://doi.org/10.2422/2036-2145.2011.3.09 Issue 2011: VOL. X, ISSUE 3 Section Article Main Article Content Dumitru Motreanu Viorica V.Motreanu Nikolaos S.Papageorgiou Abstract Article Details