@book { DasAbenteuerimUntersberg,
    title = "Das Abenteuer im Untersberg",
    author = "Maxim {Leikermoser} and Matteo {Garo} and Sabine {Leikermoser}",
    year = "2022",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1282611"
}