%0 Journal Article
%A V. N. Aref'ev
%T Smoothness of solutions of second-order hyperbolic equations with discontinuous coefficients
%J Matematičeskie zametki
%D 1991
%P 3-11
%V 49
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1991_49_6_a0/
%G ru
%F MZM_1991_49_6_a0