@book { Wissensmanagement,
    title = "Wissensmanagement",
    subtitle = "Der Weg des Unternehmens zum Know Body",
    author = "Alexander {Ilgen}",
    year = "1998",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832408930",
    url = "https://m.diplom.de/document/216794"
}