@book { TimeforaEuropeanfederation,
    title = "Time for a European federation",
    author = "Yannis {Karamitsios}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/b18952",
    url = "https://www.peterlang.com/document/1159144"
}