@book { DerElefantdesKaisers,
    title = "Der Elefant des Kaisers",
    subtitle = "Odo und Lupus, Komissare Karls des Großen, Neunter Roman",
    author = "Robert {Gordian}",
    year = "2023",
    publisher = "dotbooks Verlag",
    address = "München, Germany",
    url = "https://www.dotbooks.de/document/1272935"
}