@book { KatunddasOmelettinKenia,
    title = "Kat und das Omelett in Kenia",
    author = "Katja {Stählin}",
    year = "2023",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1337765"
}