%0 Journal Article
%A N. S. Berezkina
%T On the connection between third-order systems with no moving critical points and the sine-Gordon equation
%J Differencialʹnye uravneniâ
%D 1987
%P 707-708
%V 23
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1987_23_4_a17/
%G ru
%F DE_1987_23_4_a17