TY  - JOUR
AU  - J.E. Ault
TI  - Semigroups with midunits.
JO  - Semigroup forum
PY  - 1974
SP  - 346
EP  - 351
VL  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1974__6_133993/
ID  - SF_1974__6_133993
ER  -