@book { Mehraus31JahrenhinterGittern,
    title = "Mehr aus 31 Jahren hinter Gittern",
    author = "Norbert {Henke}",
    year = "2024",
    publisher = "Omnino Verlag",
    address = "Berlin, Deutschland",
    url = "https://shop.omnino-verlag.de/document/1496195"
}