TY - JOUR AU - V. N. Gol'dberg TI - On discontinuous solutions of nonlinear mixed problems for almost linear hyperbolic systems in the plane JO - Doklady Akademii Nauk PY - 1974 SP - 253 EP - 256 VL - 214 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1974_214_2_a3/ LA - ru ID - DAN_1974_214_2_a3 ER -