%0 Journal Article
%A M. Yu. Bogdanova
%A N. F. Naumovich
%T Differential equations with an area first integral
%J Differencialʹnye uravneniâ
%D 1983
%P 1613-1617
%V 19
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1983_19_9_a18/
%G ru
%F DE_1983_19_9_a18