@misc{JSFS_1882__23__268_0,
     title = {Vari\'et\'es},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {268--280},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {23},
     year = {1882},
     language = {fr},
     url = {http://www.numdam.org/item/JSFS_1882__23__268_0/}
}