@article{JSFS_1936__77__251_0,
     author = {Sorel, Robert},
     title = {Les chemins de fer anglais. {Note} suppl\'ementaire},
     journal = {Journal de la Soci\'et\'e de statistique de Paris},
     pages = {251--252},
     publisher = {Soci\'et\'e de statistique de Paris},
     volume = {77},
     year = {1936},
     language = {fr},
     url = {http://www.numdam.org/item/JSFS_1936__77__251_0/}
}