TY  - JOUR
AU  - Petrich, Mario
TI  - Some relations on the lattice of varieties of completely regular semigroups
JO  - Bollettino della Unione matematica italiana
PY  - 2002
SP  - 265
EP  - 278
VL  - 5B
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/BUMI_2002_8_5B_2_a0/
LA  - en
ID  - BUMI_2002_8_5B_2_a0
ER  -