@article{GDZPPN001253883,
title = {The exponent semigroup of a semigroup satisfying (XY)3 = x3 Y3.},
journal = {Semigroup forum},
volume = {20},
year = {1980},
pages = {323-330},
zbl = {0433.20041},
url = {http://dml.mathdoc.fr/item/GDZPPN001253883}
}
Kobayashi, Y. The exponent semigroup of a semigroup satisfying (XY)3 = x3 Y3.. Semigroup forum, Tome 20 (1980) pp. 323-330. http://gdmltest.u-ga.fr/item/GDZPPN001253883/