@book { LeCongrsdeParis1856,
    title = "Le Congrès de Paris (1856)",
    author = "Gilbert {Ameil} and Isabelle {Nathan} and Georges-Henri {Soutou}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1106065"
}