@book { ImmobilienmrkteundImmobilienbewertung,
    title = "Immobilienmärkte und Immobilienbewertung",
    author = "Hans-Hermann {Francke} and Heinz {Rehkugler} and Marco {Wölfle} and Bernd {Raffelhüschen}",
    year = "2020",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1221368"
}