@book { Leconceptdtatfdralmultinational,
    title = "Le concept d’État fédéral multinational",
    author = "Christophe {Parent}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1135341"
}