%0 Journal Article
%A V. P. Palamodov
%T Singularities of the solutions of strictly hyperbolic equations and the problem of quasar twins in astronomy
%J Doklady Akademii Nauk
%D 1981
%P 849-852
%V 257
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1981_257_4_a18/
%G ru
%F DAN_1981_257_4_a18