@book { DasBernsteinEnigma,
    title = "Das Bernstein-Enigma",
    author = "Gayle {Lynds} and Susanne {Tschirner}",
    year = "2022",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/1001353"
}