@article{JSFS_1948__89__381_0,
     author = {Risser, R.},
     title = {Note relative aux surfaces de probabilit\'es},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {381--409},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {89},
     year = {1948},
     language = {fr},
     url = {http://archive.numdam.org/item/JSFS_1948__89__381_0/}
}