TY - JOUR AU - Yu. G. Smirnov TI - The application of the operator pencil method in a problem JO - Doklady Akademii Nauk PY - 1990 SP - 597 EP - 599 VL - 312 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1990_312_3_a19/ LA - ru ID - DAN_1990_312_3_a19 ER -