@book { NationaleundregionaleIdentitteninSpanien,
    title = "Nationale und regionale Identitäten in Spanien",
    author = "Ulrike {Reitmann}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/222806"
}