%0 Journal Article %A Dinca, George %A Matei, Pavel %T Variational and topological methods for operator equations involving duality mappings on Orlicz-Sobolev spaces %J Electronic Journal of Differential Equations %D 2007 %V 2007 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a170/ %G en %F EJDE_2007__2007__a170