@book { ValueatRiskundExpectedShortfall,
    title = "Value-at-Risk und Expected Shortfall",
    author = "Gregor {Radnikow}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832490768",
    url = "https://m.diplom.de/document/224234"
}