TY  - JOUR
AU  - S. Ligh
TI  - On a class of semigroups admitting ring structure.
JO  - Semigroup forum
PY  - 1976
SP  - 37
EP  - 46
VL  - 13
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1976__13_134195/
ID  - SF_1976__13_134195
ER  -