%0 Journal Article %A B. S. Kalitin %T Development of Lyapunov's theorem on stability %J Differencialʹnye uravneniâ %D 1991 %P 758-766 %V 27 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_5_a3/ %G ru %F DE_1991_27_5_a3