@article{PORMA_1945__4_4_114625,
     author = {Monteiro, Ant\'onio},
     title = {Caract\'erisation de l'op\'eration de fermeture par un seul axiome},
     journal = {Portugaliae mathematica},
     pages = {158--160},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {1945},
     mrnumber = {0012310},
     zbl = {0060.39406},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1945__4_4_114625/}
}