@book { RatingundKreditzinsen,
    title = "Rating und Kreditzinsen",
    author = "Christian {Hose}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832448189",
    url = "https://m.diplom.de/document/220394"
}