TY - JOUR AU - Kačur, J. TI - On existence of the weak solution for non-linear partial differential equations of elliptic type JO - Commentationes Mathematicae Universitatis Carolinae PY - 1970 SP - 137 EP - 181 VL - 11 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1970__11_1_a9/ LA - en ID - CMUC_1970__11_1_a9 ER -