TY - JOUR AU - Hetzer, Georg TI - On the existence of weak solutions for some quasilinear elliptic variational boundary value problems at resonance JO - Commentationes Mathematicae Universitatis Carolinae PY - 1976 SP - 315 EP - 334 VL - 17 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1976__17_2_a9/ LA - en ID - CMUC_1976__17_2_a9 ER -