%0 Journal Article
%A S. A. Mazanik
%T The structure of the approximation function for a linear differential equation
%J Differencialʹnye uravneniâ
%D 1986
%P 542-545
%V 22
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1986_22_3_a24/
%G ru
%F DE_1986_22_3_a24