%0 Journal Article
%A A. E. Rudenok
%T Limit cycles of a two-dimensional autonomous system with quadratic nonlinearities
%J Differencialʹnye uravneniâ
%D 1985
%P 2072-2082
%V 21
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1985_21_12_a7/
%G ru
%F DE_1985_21_12_a7