@article{GDZPPN001263420,
title = {The smallest ideals in the two natural products on \ss S.},
journal = {Semigroup forum},
volume = {48},
year = {1994},
pages = {363-368},
url = {http://dml.mathdoc.fr/item/GDZPPN001263420}
}
Anthony, P. The smallest ideals in the two natural products on ßS.. Semigroup forum, Tome 48 (1994) pp. 363-368. http://gdmltest.u-ga.fr/item/GDZPPN001263420/