TY  - JOUR
AU  - S. Subbiah
AU  - K. jr. Magill
TI  - Semigroups with exactly three regular ...-classes.
JO  - Semigroup forum
PY  - 1979
SP  - 279
EP  - 281
VL  - 17
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1979__17_134323/
ID  - SF_1979__17_134323
ER  -