%0 Journal Article
%A Yu. V. Malyshev
%A V. P. Zakharov
%T Quadratic systems with limit cycles
%J Differencialʹnye uravneniâ
%D 1992
%P 1459-1461
%V 28
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1992_28_8_a24/
%G ru
%F DE_1992_28_8_a24