@book { AlternativeFormenderFinanzierungvonImmobilieninDeutschland,
    title = "Alternative Formen der Finanzierung von Immobilien in Deutschland",
    author = "Mirko {Kittler}",
    year = "2014",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/272210"
}