TY - JOUR AU - A. D. Dzhabrailov TI - An investigation of certain classes of second order quasilinear elliptic equations. I JO - Differencialʹnye uravneniâ PY - 1969 SP - 2245 EP - 2257 VL - 5 IS - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1969_5_12_a10/ LA - ru ID - DE_1969_5_12_a10 ER -