%0 Journal Article %A K. M. Tsoi %T On the problem of stability of vibrations of quasilinear autonomous systems with lag %J Differencialʹnye uravneniâ %D 1968 %P 868-874 %V 4 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1968_4_5_a11/ %G ru %F DE_1968_4_5_a11