@book { FieteFrahm,
    title = "Fiete Frahm",
    subtitle = "Hamburgs Kiezkünstler. Mein Vater. Seine Kunst. Sein Leben.",
    author = "Christine {Frahm}",
    year = "2025",
    publisher = "Bedey Media GmbH",
    address = "Hamburg, Deutschland",
    url = "https://kaderaverlag.openpublishing.com/document/1574481"
}