%0 Journal Article
%A M. V. Dolov
%T Limit cycles and Darboux integrals in the case of a node
%J Differencialʹnye uravneniâ
%D 1977
%P 406-415
%V 13
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1977_13_3_a2/
%G ru
%F DE_1977_13_3_a2