TY  - JOUR
AU  - Ronnie Lee
AU  - R.H. Szczarba
TI  - On the Homology and Cohomology of Congruence Subgroups.
JO  - Inventiones mathematicae
PY  - 1976
SP  - 15
EP  - 54
VL  - 33
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1976__33_142375/
ID  - IM_1976__33_142375
ER  -