@article{GDZPPN001264060,
title = {On finitely generated submonoids of N k},
journal = {Semigroup forum},
volume = {51},
year = {1995},
pages = {251-262},
zbl = {0831.20080},
url = {http://dml.mathdoc.fr/item/GDZPPN001264060}
}
Rosales, J.C. On finitely generated submonoids of N k. Semigroup forum, Tome 51 (1995) pp. 251-262. http://gdmltest.u-ga.fr/item/GDZPPN001264060/