TY  - JOUR
AU  - Dennis Johnson
TI  - Conjugacy Relations in Subgroups of the Mapping Class Group and a Group-Theoretic Description of the Rochlin Invariant.
JO  - Mathematische Annalen
PY  - 1980
SP  - 243
EP  - 264
VL  - 249
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1980__249_163404/
ID  - MAN_1980__249_163404
ER  -