@article{JSFS_1913__54__239_0,
     author = {Babson, Roger-W.},
     title = {L'\'etablissement et l'application des indices nationaux {Babson}},
     journal = {Journal de la soci\'et\'e fran\c{c}aise de statistique},
     pages = {239--249},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {54},
     year = {1913},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/JSFS_1913__54__239_0/}
}