%0 Journal Article
%A M. M. Smirnov
%T The first boundary value problem for a certain equation of mixed type
%J Differencialʹnye uravneniâ
%D 1968
%P 1663-1666
%V 4
%N 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1968_4_9_a11/
%G ru
%F DE_1968_4_9_a11