TY - JOUR AU - V. V. Nemytskii TI - Some modern problems in the qualitative theory of ordinary differential equations JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1965 SP - 1 EP - 34 VL - 20 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1965_20_4_a0/ LA - en ID - RM_1965_20_4_a0 ER -