@book { PayTVPiraterieinEuropa,
    title = "Pay-TV-Piraterie in Europa",
    author = "Matthias {Fischer}",
    year = "2004",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832479367",
    url = "https://m.diplom.de/document/223181"
}