%0 Journal Article
%A M. Utepbergenov
%T A method for studying regular singularities of partial differential equations
%J Differencialʹnye uravneniâ
%D 1989
%P 499-505
%V 25
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_3_a13/
%G ru
%F DE_1989_25_3_a13