@book { DasSchwertdesGoldschmieds,
    title = "Das Schwert des Goldschmieds",
    author = "Roland {Mueller}",
    year = "2013",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    doi = "10.3239/9783955201821",
    url = "https://m.dotbooks.de/document/209647"
}