@book { 31JahrehinterGittern,
    title = "31 Jahre hinter Gittern",
    subtitle = "Ein ehemaliger Anstaltsleiter erzählt",
    author = "Norbert {Henke}",
    year = "2024",
    publisher = "Omnino Verlag",
    address = "Berlin, Deutschland",
    url = "https://shop.omnino-verlag.de/document/1370224"
}