%0 Journal Article %A G. Barletta %A P. Candito %A D. Motreanu %T Constant Sign and Sign-Changing Solutions for Quasilinear Elliptic Equations with Neumann Boundary Condition %J Journal of convex analysis %D 2014 %P 53-66 %V 21 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCA_2014_21_1_JCA_2014_21_1_a2/ %F JCA_2014_21_1_JCA_2014_21_1_a2