@book { EuropeanIntegrationfromRometoBerlin19572007,
    title = "European Integration from Rome to Berlin: 1957-2007",
    author = "Julio {Baquero Cruz} and Carlos {Closa Montero}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Bruxelles, Belgium",
    url = "https://www.peterlang.com/document/1106026"
}