TY - JOUR AU - N. E. Bol'shakov TI - Stability with respect to the first approximation in the case of $g$-perturbations JO - Differencialʹnye uravneniâ PY - 1972 SP - 1143 EP - 1152 VL - 8 IS - 7 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1972_8_7_a0/ LA - ru ID - DE_1972_8_7_a0 ER -