%0 Journal Article
%A V. A. Il'in
%T Proof of uniqueness and membership in $W^1_2$ of the classical solution of a mixed problem for a self-adjoint hyperbolic equation
%J Matematičeskie zametki
%D 1975
%P 91-101
%V 17
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1975_17_1_a10/
%G ru
%F MZM_1975_17_1_a10