TY - JOUR AU - Yu. P. Boglaev TI - Singularly perturbed linear equations in spaces of summable functions JO - Doklady Akademii Nauk PY - 1980 SP - 15 EP - 18 VL - 250 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1980_250_1_a1/ LA - ru ID - DAN_1980_250_1_a1 ER -