@article{GDZPPN001259105,
title = {On varieties of completely regular semigroups II.},
journal = {Semigroup forum},
volume = {36},
year = {1987},
pages = {253-284},
zbl = {0638.20032},
url = {http://dml.mathdoc.fr/item/GDZPPN001259105}
}
Polák, L. On varieties of completely regular semigroups II.. Semigroup forum, Tome 36 (1987) pp. 253-284. http://gdmltest.u-ga.fr/item/GDZPPN001259105/