TY  - JOUR
AU  - V. V. Golovchanskii
TI  - Asymptotic behaviour of the spectral function of the Laplace–Beltrami operator for cocompact discrete subgroups of $\operatorname {SL}_2(\mathbb R)$
JO  - Sbornik. Mathematics
PY  - 1998
SP  - 977
EP  - 990
VL  - 189
IS  - 7
UR  - http://geodesic.mathdoc.fr/item/SM_1998_189_7_a1/
LA  - en
ID  - SM_1998_189_7_a1
ER  -