@article{GDZPPN001249819,
title = {A completion theorem for finitely generated commutative semigroups.},
journal = {Semigroup forum},
volume = {7},
year = {1974},
pages = {164-168},
zbl = {0303.20046},
url = {http://dml.mathdoc.fr/item/GDZPPN001249819}
}
Grillet, Pierre Antoine. A completion theorem for finitely generated commutative semigroups.. Semigroup forum, Tome 7 (1974) pp. 164-168. http://gdmltest.u-ga.fr/item/GDZPPN001249819/