@article{SF_1976__13_134193,
     author = {E. Cartan},
     title = {Alg\`ebres de demigroupes, quotients d'algebres de demigroupes finis.},
     journal = {Semigroup forum},
     pages = {19--28},
     publisher = {mathdoc},
     volume = {13},
     year = {1976},
     url = {http://geodesic.mathdoc.fr/item/SF_1976__13_134193/}
}