%0 Journal Article %A O. V. Anashkin %A M. M. Khapaev %T On the stability of nonlinear systems with a small parameter %J Differencialʹnye uravneniâ %D 1993 %P 1301-1307 %V 29 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1993_29_8_a2/ %G ru %F DE_1993_29_8_a2