%0 Journal Article %A A. M. Meilakhs %T A variational approach to a problem of the absolute stability of nonstationary nonlinear systems %J Differencialʹnye uravneniâ %D 1987 %P 1464-1466 %V 23 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1987_23_8_a24/ %G ru %F DE_1987_23_8_a24