%0 Journal Article
%A L. A. Cherkas
%T Bifurcations of limit cycles of a quadratic system with a change of parameter which rotates the field
%J Differencialʹnye uravneniâ
%D 1981
%P 2002-2016
%V 17
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1981_17_11_a8/
%G ru
%F DE_1981_17_11_a8