@article{SLC_1991_26_a10,
     author = {Giuseppe Pirillo},
     title = {Properties of {Integers} and {Finiteness} {Conditions} for {Semigroups}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {26},
     year = {1991},
     url = {http://geodesic.mathdoc.fr/item/SLC_1991_26_a10/}
}