@book { TelearbeitundTelekommunikation,
    title = "Telearbeit und Telekommunikation",
    author = "Wolfgang {Blumhofer}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832428709",
    url = "https://m.diplom.de/document/218597"
}