%0 Journal Article
%A S. K. Kumykova
%T A certain problem with nonlocal boundary conditions on the characteristics for an equation of mixed type
%J Differencialʹnye uravneniâ
%D 1974
%P 78-88
%V 10
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1974_10_1_a9/
%G ru
%F DE_1974_10_1_a9