@article{JSFS_1945__86__39_0,
     author = {Bertrand, Louis},
     title = {Valeur calcul\'ee de l'indice des actions industrielles fran\c{c}aises},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {39--40},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {86},
     year = {1945},
     language = {fr},
     url = {http://archive.numdam.org/item/JSFS_1945__86__39_0/}
}