TY  - JOUR
AU  - S. Schwarz
TI  - Any O-simple dual semigroup is completely O-simple.
JO  - Semigroup forum
PY  - 1971
SP  - 90
EP  - 92
VL  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1971__2_133818/
ID  - SF_1971__2_133818
ER  -