@article{10_4064_cm_7_2_181_185,
     author = {A. Sade},
     title = {Multigroupo{\"\i}de sur un syst\`eme demosien de groupo{\"\i}des},
     journal = {Colloquium Mathematicum},
     pages = {181--185},
     publisher = {mathdoc},
     volume = {7},
     number = {2},
     year = {1959},
     doi = {10.4064/cm-7-2-181-185},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-7-2-181-185/}
}