%0 Journal Article
%A N. A. Lukashevich
%T Third-order equations without fixed critical points
%J Differencialʹnye uravneniâ
%D 1982
%P 778-785
%V 18
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1982_18_5_a7/
%G ru
%F DE_1982_18_5_a7