@article{JSFS_1901__42__22_0,
     author = {Turquan, V.},
     title = {La f\'econdit\'e par \^ages. {Introduction}},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {22--29},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {42},
     year = {1901},
     language = {fr},
     url = {http://www.numdam.org/item/JSFS_1901__42__22_0/}
}