@book { ToteOmaimWeihnachtsfieber,
    title = "Tote Oma im Weihnachtsfieber",
    author = "Christiane {Martini}",
    year = "2016",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/341699"
}