@book { Lepaysageeuropendelascuritintrieure,
    title = "Le paysage européen de la sécurité intérieure",
    author = "Pierre {Berthelet}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1106032"
}