%0 Journal Article %A I. G. Egorov %T Stability in the large of the zero solution of a certain system of two differential equations %J Differencialʹnye uravneniâ %D 1973 %P 241-250 %V 9 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1973_9_2_a4/ %G ru %F DE_1973_9_2_a4