@book { Wissensmanagement,
    title = "Wissensmanagement",
    author = "Rainer {Müller}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832424572",
    url = "https://m.diplom.de/document/218255"
}