%0 Journal Article
%A A. S. Shube
%T Sufficient conditions for the center for a two-dimensional autonomous system with cubic right-hand sides
%J Differencialʹnye uravneniâ
%D 1989
%P 2014-2016
%V 25
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_11_a32/
%G ru
%F DE_1989_25_11_a32