@article{GDZPPN001257005,
title = {Globals of completely regular periodic semigroups.},
journal = {Semigroup forum},
volume = {30},
year = {1984},
pages = {365-374},
zbl = {0553.20036},
url = {http://dml.mathdoc.fr/item/GDZPPN001257005}
}
Gould, M.; Iskra, J.; Tsinakis, C. Globals of completely regular periodic semigroups.. Semigroup forum, Tome 30 (1984) pp. 365-374. http://gdmltest.u-ga.fr/item/GDZPPN001257005/