%0 Journal Article
%A V. Ya. Ivrii
%T Wave fronts of solutions of some hyperbolic equations and conical refraction
%J Doklady Akademii Nauk
%D 1976
%P 1257-1259
%V 226
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1976_226_6_a3/
%G ru
%F DAN_1976_226_6_a3