@article{GDZPPN001254774,
title = {Finite globally idempotent semigroups.},
journal = {Semigroup forum},
volume = {23},
year = {1981},
pages = {217-224},
zbl = {0463.20044},
url = {http://dml.mathdoc.fr/item/GDZPPN001254774}
}
Grzymala-Busse, J.W. Finite globally idempotent semigroups.. Semigroup forum, Tome 23 (1981) pp. 217-224. http://gdmltest.u-ga.fr/item/GDZPPN001254774/