%0 Journal Article %A Diego Averna %A Gabriele Bonanno %T Existence of solutions for a multivalued boundary value problem with non-convex and unbounded right-hand side %J Annales Polonici Mathematici %D 1999 %P 253-271 %V 71 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-71-3-253-271/ %R 10.4064/ap-71-3-253-271 %G en %F 10_4064_ap_71_3_253_271