@book { TeleshoppinginDeutschland,
    title = "Teleshopping in Deutschland",
    author = "Thomas {Kornecki}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836622066",
    url = "https://m.diplom.de/document/226326"
}