@book { MarktchancendesdigitalenFernsehens,
    title = "Marktchancen des digitalen Fernsehens",
    author = "Florian {Breunig}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832432003",
    url = "https://m.diplom.de/document/218894"
}