@book { DasRisikoverbriefterForderungen,
    title = "Das Risiko verbriefter Forderungen",
    subtitle = "Grundlagen, Ratingverfahren und Problemfelder",
    author = "André {Waibel}",
    year = "2007",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836604871",
    url = "https://m.diplom.de/document/228978"
}