TY  - JOUR
AU  - Petrich, Mario
TI  - Relations on a lattice of varieties of completely regular semigroups
JO  - Mathematica Bohemica
PY  - 2020
SP  - 225
EP  - 240
VL  - 145
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/MB.2019.0050-18/
DO  - 10.21136/MB.2019.0050-18
LA  - en
ID  - 10_21136_MB_2019_0050_18
ER  -