%0 Journal Article %A A. Yu. Aleksandrov %T On the stability of the Liénard equation with unsteady perturbations %J Differencialʹnye uravneniâ %D 1996 %P 702-703 %V 32 %N 5 %U http://geodesic.mathdoc.fr/item/DE_1996_32_5_a16/ %G ru %F DE_1996_32_5_a16