@book { TageszeitungenimInternet,
    title = "Tageszeitungen im Internet",
    author = "Andrea {Wenk}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Germany",
    doi = "10.3239/9783832441715",
    url = "https://m.diplom.de/document/219792"
}