%0 Journal Article %A Yu. V. Malyshev %A V. P. Zakharov %T Linear generalized Lyapunov functions and limit cycles %J Differencialʹnye uravneniâ %D 1991 %P 777-781 %V 27 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_5_a6/ %G ru %F DE_1991_27_5_a6