@book { EiselfenLthiensGeheimnis,
    title = "Eiselfen: Lúthiens Geheimnis",
    author = "Josefine {Gottwald} and Martin {Mächler}",
    year = "2023",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1352265"
}