%0 Journal Article %A Liu, Xiaochun %A Yang, Jianfu %T Multiple solutions of a Schrödinger type semilinear equation %J Commentationes Mathematicae Universitatis Carolinae %D 2000 %P 735-745 %V 41 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_2000__41_4_a6/ %G en %F CMUC_2000__41_4_a6