@book { DieMessensindnochnichtgelesen,
    title = "Die Messen sind noch nicht gelesen",
    author = "Bettina {Klusemann}",
    year = "2017",
    publisher = "dp DIGITAL PUBLISHERS GmbH",
    address = "Stuttgart, Deutschland",
    url = "https://shop.digitalpublishers.de/document/353253"
}