@article{GDZPPN00124874X,
title = {Maximal ideal complements which are subsemigroups.},
journal = {Semigroup forum},
volume = {4},
year = {1972},
pages = {174-175},
zbl = {0263.20035},
url = {http://dml.mathdoc.fr/item/GDZPPN00124874X}
}
Propes, J.C. Maximal ideal complements which are subsemigroups.. Semigroup forum, Tome 4 (1972) pp. 174-175. http://gdmltest.u-ga.fr/item/GDZPPN00124874X/