TY - JOUR AU - S. N. Kruzhkov TI - On solutions of first order nonlinear equations JO - Doklady Akademii Nauk PY - 1966 SP - 286 EP - 289 VL - 167 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1966_167_2_a8/ LA - ru ID - DAN_1966_167_2_a8 ER -