%0 Journal Article
%A A. V. Osipov
%T On the question of the existence of a transformation to normal form
%J Differencialʹnye uravneniâ
%D 1973
%P 1149-1150
%V 9
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1973_9_6_a20/
%G ru
%F DE_1973_9_6_a20