TY - JOUR AU - A. V. Ivanov TI - Local estimates of the maximum modulus of the first derivatives of the solutions of quasilinear nonuniformly elliptic and nonuniformly parabolic equations and of systems of general form JO - Informatics and Automation PY - 1970 SP - 45 EP - 64 VL - 110 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1970_110_a3/ LA - ru ID - TRSPY_1970_110_a3 ER -