@book { DunklesGrab,
    title = "Dunkles Grab",
    subtitle = "Drei Krimis in einem eBook: »Novembermord«, »Engelmord« und »Regenmord«",
    author = "Berndt {Schulz}",
    year = "2022",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/1243985"
}