@book { Risikomanagement,
    title = "Risikomanagement",
    subtitle = "Ein strategischer Erfolgsfaktor",
    author = "Katja {Speck}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832461614",
    url = "https://m.diplom.de/document/221618"
}