@book { InformationManagement,
    title = "Information Management",
    author = "Wolfgang {Fichter} and Udo {Willy}",
    year = "1998",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832406875",
    url = "https://m.diplom.de/document/216615"
}