%0 Journal Article
%A V. S. Medvedev
%T Sufficient conditions for the absence of integral cycles for dynamical systems on manifolds
%J Differencialʹnye uravneniâ
%D 1970
%P 454-466
%V 6
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1970_6_3_a7/
%G ru
%F DE_1970_6_3_a7