@book { ToteOmaaufEis,
    title = "Tote Oma auf Eis",
    subtitle = "Kriminalroman",
    author = "Christiane {Martini}",
    year = "2016",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/335600"
}