@book { DigitalesFernsehen,
    title = "Digitales Fernsehen",
    author = "Tim {Cappelmann}",
    year = "2004",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638301831",
    url = "https://www.hausarbeiten.de/document/28387"
}