@book { KrimiDoppelband2139,
    title = "Krimi Doppelband 2139",
    author = "Alfred {Bekker}",
    year = "2023",
    publisher = "Uksak E-Books",
    address = "Lengerich, Deutschland",
    url = "https://uksakebooks.grin.com/document/1357042"
}