TY  - JOUR
AU  - V. P. Smolich
TI  - The spectrum of the perturbed Laplace operator on the fundamental domain of a discrete group on the Lobachevskii plane
JO  - Vestnik Moskovskogo universiteta. Matematika, mehanika
PY  - 1983
SP  - 49
EP  - 53
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VMUMM_1983_2_a10/
LA  - ru
ID  - VMUMM_1983_2_a10
ER  -