TY  - JOUR
AU  - F.P. Pedersen
AU  - W.S. Sizer
TI  - Subsemigroups of the finite complexes of a group.
JO  - Semigroup forum
PY  - 1980
SP  - 285
EP  - 292
VL  - 20
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1980__20_134422/
ID  - SF_1980__20_134422
ER  -