%0 Journal Article
%A Ya. V. Bykov
%T On singular periodic solutions of systems of ordinary differential equations
%J Differencialʹnye uravneniâ
%D 1965
%P 851-867
%V 1
%N 7
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1965_1_7_a0/
%G ru
%F DE_1965_1_7_a0