@book { GeldpolitikundVermgenspreise,
    title = "Geldpolitik und Vermögenspreise",
    author = "Robert {Gorthmanns}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836608992",
    url = "https://m.diplom.de/document/225543"
}