TY - JOUR AU - M. Yunusov TI - Operator equations with small parameter and nonlocal boundary conditions JO - Differencialʹnye uravneniâ PY - 1981 SP - 172 EP - 181 VL - 17 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1981_17_1_a20/ LA - ru ID - DE_1981_17_1_a20 ER -