@book { DergenossenschaftlicheWohnbauinderNordwestschweiz,
    title = "Der genossenschaftliche Wohnbau in der Nordwestschweiz",
    author = "Florian {Kirsch}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836637015",
    url = "https://m.diplom.de/document/227276"
}