@book { MessungundManagementvonKreditportfoliorisiken,
    title = "Messung und Management von Kreditportfoliorisiken",
    author = "Kilian {Müller}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832466718",
    url = "https://m.diplom.de/document/222052"
}