@article{PORMA_1992__49_3_115793,
     author = {Almeida, Jorge},
     title = {On the power semigroup of a finite semigroup},
     journal = {Portugaliae mathematica},
     pages = {295--331},
     publisher = {mathdoc},
     volume = {49},
     number = {3},
     year = {1992},
     mrnumber = {1201293},
     zbl = {0773.20026},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1992__49_3_115793/}
}