@book { ArduaSpesMundi,
    title = "Ardua Spes Mundi",
    subtitle = "Studien zu lateinischen Gedichten aus Sankt Gallen",
    author = "Peter {Stotz}",
    year = "1972",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1069284"
}