TY - JOUR AU - A. Dzhuraev TI - Some mixed problems for first-order hyperbolic systems JO - Doklady Akademii Nauk PY - 1991 SP - 24 EP - 28 VL - 318 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1991_318_1_a3/ LA - ru ID - DAN_1991_318_1_a3 ER -