@book { DantesConvivio,
    title = "Dantes «Convivio»",
    subtitle = "Einführung und Handbuch- Erschriebene Immanenz",
    author = "Heinz Willi {Wittschier}",
    year = "2009",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1104685"
}