%0 Journal Article
%A H. A. Asatryan
%A G. Kh. Grlgorlan-Khaktian
%A A. K. Nikoghosian
%T The wave field in the focus of hyperbolic mirror
%J Proceedings of the Yerevan State University. Physical and mathematical sciences
%D 1991
%P 74-78
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UZERU_1991_2_a9/
%G ru
%F UZERU_1991_2_a9