@book { DieIntegrationUngarnsindeneuropischenWirtschaftsraum,
    title = "Die Integration Ungarns in den europäischen Wirtschaftsraum",
    author = "Peter Matthias {Trick}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832472955",
    url = "https://m.diplom.de/document/222593"
}