TY  - JOUR
AU  - A.H. Clifford
TI  - The partial groupoid of idempotents of a regular semigroup.
JO  - Semigroup forum
PY  - 1975
SP  - 262
EP  - 268
VL  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1975__10_134118/
ID  - SF_1975__10_134118
ER  -