%0 Journal Article
%A Yu. F. Korobeinik
%T Differential equations of infinite order and infinite systems of

%J Izvestiya. Mathematics 
%D 1970
%P 891-930
%V 4
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1970_4_4_a9/
%G en
%F IM2_1970_4_4_a9