TY - JOUR AU - A. V. Bitsadze TI - On the theory of first order quasilinear ordinary differential equations JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1971 SP - 95 EP - 104 VL - 112 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1971_112_a6/ LA - ru ID - TM_1971_112_a6 ER -