%0 Journal Article
%A A. F. Filippov
%T Dissipativity and periodic solutions of second order nonsymmetric systems
%J Differencialʹnye uravneniâ
%D 1967
%P 1634-1642
%V 3
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1967_3_10_a1/
%G ru
%F DE_1967_3_10_a1