@article{CLTM_2001_2001_1_a3,
     author = {Bisgaard, Torben Maack},
     title = {Semigrupos {C-finito} {C-separable} de recuento semiperfecto.},
     journal = {Collectanea mathematica},
     pages = {55-73},
     publisher = {mathdoc},
     volume = {52},
     number = {1},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_2001_2001_1_a3/}
}