@book { Flgelschmerzen,
    title = "Flügelschmerzen ",
    subtitle = "booksnacks (Kurzgeschichte, Fantasy, Liebe)",
    author = "Nadin {Hardwiger}",
    year = "2016",
    publisher = "booksnacks",
    address = "Stuttgart, Deutschland",
    url = "https://shop.digitalpublishers.de/document/322814"
}