@book { InnovativeWohnformen,
    title = "Innovative Wohnformen",
    author = "Stefanie {Knelange} and Katja {Emde}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832492434",
    url = "https://m.diplom.de/document/224366"
}