@article{JSFS_1923__64__170_0,
     author = {Guyot, Yves},
     title = {L'or. {Appr\'eciation} et d\'epr\'eciation},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {170--180},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {64},
     year = {1923},
     language = {fr},
     url = {http://www.numdam.org/item/JSFS_1923__64__170_0/}
}