%0 Journal Article %A S. K. Persidskii %T Some theorems on Ljapunov's second method %J Differencialʹnye uravneniâ %D 1969 %P 678-687 %V 5 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1969_5_4_a7/ %G ru %F DE_1969_5_4_a7