%0 Journal Article
%A A. M. Nakhushev
%T Certain boundary value problems for hyperbolic equations and equations of mixed type
%J Differencialʹnye uravneniâ
%D 1969
%P 44-59
%V 5
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1969_5_1_a1/
%G ru
%F DE_1969_5_1_a1