TY - JOUR AU - V. N. Gol'dberg TI - Branching of solutions of nonlinear mixed problems for almost linear hyperbolic systems on the plane JO - Doklady Akademii Nauk PY - 1972 SP - 518 EP - 521 VL - 202 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1972_202_3_a4/ LA - ru ID - DAN_1972_202_3_a4 ER -