@book { SteuerungvonReferenzqualittEntwicklungeinesBasismodells,
    title = "Steuerung von Referenzqualität - Entwicklung eines Basismodells",
    author = "Cora {Petrick}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836614603",
    url = "https://m.diplom.de/document/225876"
}