TY  - JOUR
AU  - N. V. Ivanov
TI  - Teichm\"uller modular groups and arithmetical groups
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1988
SP  - 95
EP  - 110
VL  - 167
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1988_167_a5/
LA  - ru
ID  - ZNSL_1988_167_a5
ER  -