@book { DietotenBcher,
    title = "Die toten Bücher",
    subtitle = "Kriminalroman",
    author = "Michael {Kurfer}",
    year = "2012",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    doi = "10.3239/9783943835113",
    url = "https://www.dotbooks.de/document/195998"
}