@book { Hochschulradios,
    title = "Hochschulradios",
    author = "Kerstin {Ingerfeld}",
    year = "1998",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832406103",
    url = "https://m.diplom.de/document/216543"
}