%0 Journal Article
%A Yu. M. Rappoport
%T A modification of the approximation method
%J Differencialʹnye uravneniâ
%D 1983
%P 1809-1813
%V 19
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1983_19_10_a24/
%G ru
%F DE_1983_19_10_a24