%0 Journal Article
%A A. I. Yablonskii
%A A. F. Korzyuk
%T Classes of third-order systems with quadratic right-hand sides without moving critical points
%J Differencialʹnye uravneniâ
%D 1989
%P 635-640
%V 25
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_4_a10/
%G ru
%F DE_1989_25_4_a10