@article{SF_1972__4_133879,
     author = {T. Tamura and T.E. Nordahl},
     title = {Finiteness of lattices of congruences on commutative semigroups.},
     journal = {Semigroup forum},
     pages = {73--77},
     publisher = {mathdoc},
     volume = {4},
     year = {1972},
     zbl = {0261.20052},
     url = {http://geodesic.mathdoc.fr/item/SF_1972__4_133879/}
}