@misc{JSFS_1920__61__261_0,
     title = {Vie de la soci\'et\'e},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {261--266},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {61},
     year = {1920},
     language = {fr},
     url = {http://www.numdam.org/item/JSFS_1920__61__261_0/}
}