@book { DiefranzsischeAgentin,
    title = "Die französische Agentin",
    subtitle = "Kriminalroman - Georg Rubin ermittelt 3",
    author = "Edgar {Franzmann}",
    year = "2024",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/1216276"
}