%0 Journal Article
%A N. J. Yurchuk
%T A partly characteristic boundary value problem for a certain form of partial differential equations.~I
%J Differencialʹnye uravneniâ
%D 1968
%P 2258-2267
%V 4
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1968_4_12_a9/
%G ru
%F DE_1968_4_12_a9