@book { EinsatzdesQualityFunctionDeploymentQFDimLuftverkehrssektor,
    title = "Einsatz des Quality Function Deployment (QFD) im Luftverkehrssektor",
    author = "Hendrik {Asdonk}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832440961",
    url = "https://m.diplom.de/document/219723"
}