TY - JOUR AU - G. S. Krechetov TI - Certain sufficient conditions for the asymptotic stability of the zero solution of a nonautonomous system of two differential equations JO - Differencialʹnye uravneniâ PY - 1969 SP - 612 EP - 625 VL - 5 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1969_5_4_a1/ LA - ru ID - DE_1969_5_4_a1 ER -