%0 Journal Article
%A A. S. Shube
%T On the structure of an integrating factor for a cubic system with a singular point of center type
%J Differencialʹnye uravneniâ
%D 1996
%P 713-715
%V 32
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1996_32_5_a21/
%G ru
%F DE_1996_32_5_a21