TY  - JOUR
AU  - M. Petrich
TI  - On the varieties of completely regular semigroups.
JO  - Semigroup forum
PY  - 1982
SP  - 153
EP  - 170
VL  - 25
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1982__25_134570/
ID  - SF_1982__25_134570
ER  -