@article{JSFS_1987__128__203_0,
     author = {Prat, Georges},
     title = {Reformulation du cours moyen des actions, {\'Etats-Unis,} 1956-1986},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {203--222},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {128},
     year = {1987},
     language = {fr},
     url = {http://www.numdam.org/item/JSFS_1987__128__203_0/}
}