@book { DieRollederStbeinschlankenOrganisationen,
    title = "Die Rolle der Stäbe in schlanken Organisationen",
    author = "Bettina {Völkl}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832413378",
    url = "https://m.diplom.de/document/217240"
}