@book { InnenrevisioninBanken,
    title = "Innenrevision in Banken",
    subtitle = "Chancen einer Neuausrichtung",
    author = "Thomas {Hammer}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832449421",
    url = "https://m.diplom.de/document/220509"
}