%0 Journal Article %A Quittner, Pavol %T Solvability and multiplicity results for variational inequalities %J Commentationes Mathematicae Universitatis Carolinae %D 1989 %P 281-302 %V 30 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1989__30_2_a9/ %G en %F CMUC_1989__30_2_a9