@article{1102805795,
author = {Hamilton, Howard},
title = {Modularity of the congruence lattice of a commutative cancellative semigroup.},
journal = {Pacific J. Math.},
volume = {79},
number = {2},
year = {1978},
pages = { 469-485},
language = {en},
url = {http://dml.mathdoc.fr/item/1102805795}
}
Hamilton, Howard. Modularity of the congruence lattice of a commutative cancellative semigroup.. Pacific J. Math., Tome 79 (1978) no. 2, pp. 469-485. http://gdmltest.u-ga.fr/item/1102805795/