%0 Journal Article
%A N. Yu. Kapustin
%T On two problems for a hyperbolic equation in the characteristic
%J Doklady Akademii Nauk
%D 1987
%P 301-305
%V 293
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1987_293_2_a8/
%G ru
%F DAN_1987_293_2_a8