@book { RundfunkimWorldWideWeb,
    title = "Rundfunk im World Wide Web",
    author = "Rüdiger {Mandry}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832417000",
    url = "https://m.diplom.de/document/217573"
}