%0 Journal Article
%A V. P. Smolich
%T The spectrum of the perturbed Laplace operator on the fundamental domain of a discrete group on the Lobachevskii plane
%J Vestnik Moskovskogo universiteta. Matematika, mehanika
%D 1983
%P 49-53
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VMUMM_1983_2_a10/
%G ru
%F VMUMM_1983_2_a10