@book { DasBildimdigitalenZeitalter,
    title = "Das Bild im digitalen Zeitalter",
    author = "Janina {Franz}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640293476",
    url = "https://www.hausarbeiten.de/document/123821"
}