TY - JOUR AU - B. V. Melent'ev TI - An existence theorem for the solution of a boundary-value problem for an equation of mixed type JO - Doklady Akademii Nauk PY - 1962 SP - 1251 EP - 1254 VL - 142 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1962_142_6_a8/ LA - ru ID - DAN_1962_142_6_a8 ER -