%0 Journal Article
%A S. T. Zavalishchin
%T On the question of the general form of a linear equation. I, II
%J Differencialʹnye uravneniâ
%D 1971
%P 981-989
%V 7
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1971_7_6_a3/
%G ru
%F DE_1971_7_6_a3