%0 Journal Article
%A Pulkina,  L.S.
%T A non-local problem with integral conditions for hyperbolic equations
%J Electronic journal of differential equations
%D 1999
%V 1999
%U http://geodesic.mathdoc.fr/item/EJDE_1999__1999__a90/
%G en
%F EJDE_1999__1999__a90