@book { DunklerSchlaf,
    title = "Dunkler Schlaf",
    subtitle = "Thriller | Kommissar Konrad Sejer 4 | Psychologische Spannung für Fans von Håkan Nesser",
    author = "Karin {Fossum} and Gabriele {Haefs}",
    year = "2025",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/1363273"
}