@misc{JSFS_1865__6__191_0,
     title = {Vari\'et\'es},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {191--192},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {6},
     year = {1865},
     language = {fr},
     url = {http://www.numdam.org/item/JSFS_1865__6__191_0/}
}