@book { TimeforaEuropeanFederation,
    title = "Time for a European Federation",
    subtitle = "European sovereignty to meet the global challenges of our century. Second edition",
    author = "Yannis {Karamitsios}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    doi = "10.3726/b24249",
    url = "https://www.peterlang.com/document/1791081"
}