%0 Journal Article
%A V. G. Romanov
%T Solvability of inverse problems for hyperbolic equations in a
%J Doklady Akademii Nauk
%D 1989
%P 807-811
%V 304
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1989_304_4_a8/
%G ru
%F DAN_1989_304_4_a8