@book { FhrungundSelbstorganisation,
    title = "Führung und Selbstorganisation",
    author = "Heidi {Hentschke}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832455057",
    url = "https://m.diplom.de/document/220815"
}