@article{GDZPPN001248146, title = {Finiteness of lattices of congruences on commutative semigroups.}, journal = {Semigroup forum}, volume = {4}, year = {1972}, pages = {73-77}, zbl = {0261.20052}, url = {http://dml.mathdoc.fr/item/GDZPPN001248146} }
Tamura, T.; Nordahl, T.E. Finiteness of lattices of congruences on commutative semigroups.. Semigroup forum, Tome 4 (1972) pp. 73-77. http://gdmltest.u-ga.fr/item/GDZPPN001248146/