TY  - JOUR
AU  - J.L. Harer
TI  - The virtual cohomological dimension of the mapping class group of an orientable surface.
JO  - Inventiones mathematicae
PY  - 1986
SP  - 157
EP  - 176
VL  - 84
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1986__84_143338/
ID  - IM_1986__84_143338
ER  -