@article{GDZPPN001254642,
title = {Semigroups whose regular ... -classes form well-ordered chains.},
journal = {Semigroup forum},
volume = {23},
year = {1981},
pages = {89-92},
zbl = {0488.54024},
url = {http://dml.mathdoc.fr/item/GDZPPN001254642}
}
Subbiah, S.; Magill, K.D. jr. Semigroups whose regular ... -classes form well-ordered chains.. Semigroup forum, Tome 23 (1981) pp. 89-92. http://gdmltest.u-ga.fr/item/GDZPPN001254642/