@book { KommunikationsmodelleundMedientheorien,
    title = "Kommunikationsmodelle und Medientheorien",
    author = "Christian {Matiack}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/221281"
}