TY - JOUR AU - D. A. Ismailov AU - Ya. D. Mamedov TI - Approximate methods for the solution of abstract differential equations in a Banach space JO - Differencialʹnye uravneniâ PY - 1975 SP - 921 EP - 923 VL - 11 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1975_11_5_a17/ LA - ru ID - DE_1975_11_5_a17 ER -