@book { DieVerbindungvonBalancedScorcardundShareholderValueManagementamBeispielvonRyanair,
    title = "Die Verbindung von Balanced Scorcard und Shareholder Value Management am Beispiel von Ryanair",
    author = "René {Assion}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832471798",
    url = "https://m.diplom.de/document/222484"
}