@article{GDZPPN002409828,
title = {Semigroups with No Non-Zero Nilpotent Elements.},
journal = {Mathematische Zeitschrift},
volume = {121},
year = {1971},
pages = {168-176},
zbl = {0212.35803},
url = {http://dml.mathdoc.fr/item/GDZPPN002409828}
}
Adams, Donald H. Semigroups with No Non-Zero Nilpotent Elements.. Mathematische Zeitschrift, Tome 121 (1971) pp. 168-176. http://gdmltest.u-ga.fr/item/GDZPPN002409828/