%0 Journal Article %A Fučík, Svatopluk %T Further remark on a theorem by E. M. Landesman and A. C. Lazer %J Commentationes Mathematicae Universitatis Carolinae %D 1974 %P 259-271 %V 15 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1974__15_2_a4/ %G en %F CMUC_1974__15_2_a4