TY - JOUR AU - Fučík, Svatopluk TI - Further remark on a theorem by E. M. Landesman and A. C. Lazer JO - Commentationes Mathematicae Universitatis Carolinae PY - 1974 SP - 259 EP - 271 VL - 15 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1974__15_2_a4/ LA - en ID - CMUC_1974__15_2_a4 ER -