@book { DieZukunftderRheinMainRegion,
    title = "Die Zukunft der Rhein-Main-Region",
    subtitle = "Vernetzung und Kooperation von Initiativen in der Region",
    author = "Michael {Tschakert}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/224830"
}