@book { LEuropeetsescollectivitsterritoriales,
    title = "L’Europe et ses collectivités territoriales",
    author = "Nicolas {Levrat}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1104444"
}