@book { FacilityManagement,
    title = "Facility Management",
    subtitle = "FM-Systemimplementierung als Dienstleistungskonfiguration eines Consultingunternehmens im Business-to-Business Bereich",
    author = "Andreas {Auer}",
    year = "1999",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832417697",
    url = "https://m.diplom.de/document/217632"
}