%0 Journal Article
%A S. S. Kharibegashvili
%T The characteristic problem for second-order hyperbolic systems with constant coefficients
%J Differencialʹnye uravneniâ
%D 1978
%P 123-135
%V 14
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1978_14_1_a12/
%G ru
%F DE_1978_14_1_a12