@book { DieSiedlungRmerstadtinFrankfurtaMvonErnstMay,
    title = "Die Siedlung Römerstadt in Frankfurt a. M. von Ernst May",
    author = "Johannes {Schleuning}",
    year = "2000",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832422776",
    url = "https://m.diplom.de/document/218094"
}