@book { MessungderEffizienzinBankenmittelsderDataEnvelopmentAnalysisDEA,
    title = "Messung der Effizienz in Banken mittels der Data Envelopment Analysis (DEA)",
    author = "Christian {Bock}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832469023",
    url = "https://m.diplom.de/document/222241"
}