%0 Journal Article
%A A. E. Rudenok
%T Isolated periodic solutions of certain differential equations
%J Differencialʹnye uravneniâ
%D 1978
%P 935-937
%V 14
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1978_14_5_a23/
%G ru
%F DE_1978_14_5_a23