TY  - JOUR
AU  - Powers, Robert T.
TI  - An Index Theory for Semigroups of *-Endomorphisms of and Type II1 Factors.
JO  - Canadian journal of mathematics
PY  - 1988
SP  - 86
EP  - 114
VL  - 40
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1988-004-3/
DO  - 10.4153/CJM-1988-004-3
ID  - 10_4153_CJM_1988_004_3
ER  -