TY - JOUR AU - M. B. Kapilevich TI - Mixed boundary value problems for singular hyperbolic equations JO - Doklady Akademii Nauk PY - 1960 SP - 1005 EP - 1008 VL - 132 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1960_132_5_a8/ LA - ru ID - DAN_1960_132_5_a8 ER -