%0 Journal Article
%A L. A. Zhelezovskaya
%A S. E. Zhelezovsky
%A V. Ph. Kirichenko
%A V. A. Krys'ko
%T Symmetrization of an operator of a boundary value problem for a hyperbolic equation
%J Differencialʹnye uravneniâ
%D 1989
%P 523-525
%V 25
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_3_a18/
%G ru
%F DE_1989_25_3_a18