@book { PerformancemessungvonInvestmentfonds,
    title = "Performancemessung von Investmentfonds",
    subtitle = "Neuere Methoden im Vergleich",
    author = "Josef {Galli}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832471859",
    url = "https://m.diplom.de/document/222490"
}