%0 Journal Article
%A N. Yu. Kapustin
%T Solvability in the class $L_2$ of a problem with a boundary condition on a characteristic for a hyperbolic equation with order degeneration
%J Differencialʹnye uravneniâ
%D 1990
%P 66-75
%V 26
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1990_26_1_a8/
%G ru
%F DE_1990_26_1_a8