@book { ApproximationderHistorischenSimulationdurchanalytischeValueatRisk,
    title = "Approximation der Historischen Simulation durch analytische Value at Risk",
    author = "Heino {Betz}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832449865",
    url = "https://m.diplom.de/document/220550"
}