@book { BalancedScorecardbeiBanken,
    title = "Balanced Scorecard bei Banken",
    author = "Andreas {Landvogt}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832472672",
    url = "https://m.diplom.de/document/222567"
}