TY - JOUR AU - S. S. Kharibegashvili TI - On the statement of characteristic problems for symmetric first-order hyperbolic systems JO - Differencialʹnye uravneniâ PY - 2000 SP - 1113 EP - 1122 VL - 36 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_2000_36_8_a13/ LA - ru ID - DE_2000_36_8_a13 ER -