@book { SCHWEIGEGELDFRLIEBESBRIEFE,
    title = "SCHWEIGEGELD FÜR LIEBESBRIEFE",
    author = "John {Cassells}",
    year = "2023",
    publisher = "Signum-Verlag",
    address = ", Deutschland",
    url = "https://tolino.openpublishing.com/document/1401537"
}