%0 Journal Article %A O. V. Anashkin %A M. M. Khapaev %T The method of Lyapunov functions for systems with perturbations %J Differencialʹnye uravneniâ %D 1992 %P 2027-2029 %V 28 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1992_28_12_a0/ %G ru %F DE_1992_28_12_a0