TY  - JOUR
AU  - P.G. Trotter
TI  - Cancellative simple semigroups and groups.
JO  - Semigroup forum
PY  - 1977
SP  - 189
EP  - 198
VL  - 14
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1977__14_186367/
ID  - SF_1977__14_186367
ER  -