@article{SF_1984__28_134645,
     author = {A. de Luca and A. Restivo},
     title = {A finiteness condition for finitely generated semigroups.},
     journal = {Semigroup forum},
     pages = {123--134},
     publisher = {mathdoc},
     volume = {28},
     year = {1984},
     zbl = {0529.20044},
     url = {http://geodesic.mathdoc.fr/item/SF_1984__28_134645/}
}