@article{JSFS_1909__50__55_0,
     author = {Roulleau, G.},
     title = {Chronique trimestrielle des banques, changes et m\'etaux pr\'ecieux},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {55--59},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {50},
     year = {1909},
     language = {fr},
     url = {http://www.numdam.org/item/JSFS_1909__50__55_0/}
}