TY  - JOUR
AU  - E. V. Dybkova
TI  - Congruence subgroups of the symplectic group
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1976
SP  - 80
EP  - 91
VL  - 64
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1976_64_a7/
LA  - ru
ID  - ZNSL_1976_64_a7
ER  -