%0 Journal Article
%A A. E. Rudenok
%T The normal form of some differential equations
%J Differencialʹnye uravneniâ
%D 1978
%P 747-749
%V 14
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1978_14_4_a23/
%G ru
%F DE_1978_14_4_a23