@book { ComputerAidedFacilityManagementundContracting,
    title = "Computer Aided Facility Management und Contracting",
    author = "Timo {Brüggemann}",
    year = "2010",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640788866",
    url = "https://www.hausarbeiten.de/document/163358"
}