%0 Journal Article %A G. S. Krechetov %T The stability of the zero solution of a system of two differential equations %J Differencialʹnye uravneniâ %D 1969 %P 273-285 %V 5 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1969_5_2_a5/ %G ru %F DE_1969_5_2_a5