TY  - JOUR
AU  - A. B. Engel
TI  - Necessary conditions for a semigroup to be an integral CRM-ring with identity.
JO  - Semigroup forum
PY  - 1976
SP  - 207
EP  - 214
VL  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1976__12_134173/
ID  - SF_1976__12_134173
ER  -