@book { DasKonzeptderBalancedScorecard,
    title = "Das Konzept der Balanced Scorecard",
    author = "Stefan {Hentschel}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832427191",
    url = "https://m.diplom.de/document/218460"
}