TY  - JOUR
AU  - B.M. Schein
TI  - Injectives in certain classes of semigroups.
JO  - Semigroup forum
PY  - 1974
SP  - 159
EP  - 171
VL  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1974__9_134070/
ID  - SF_1974__9_134070
ER  -