%0 Journal Article
%A È. G. Poznyak
%A A. G. Popov
%T Lobachevskii geometry and equations of mathematical physics
%J Doklady Akademii Nauk
%D 1993
%P 418-421
%V 332
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1993_332_4_a4/
%G ru
%F DAN_1993_332_4_a4