%0 Journal Article
%A V. G. Romanovsky
%T On the cyclicity of a singular point of a cubic system
%J Differencialʹnye uravneniâ
%D 1996
%P 784-787
%V 32
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1996_32_6_a9/
%G ru
%F DE_1996_32_6_a9