@book { Kaumzuglauben,
    title = "Kaum zu glauben",
    subtitle = "Grundriss einer metasymbolischen Wahrheitstheorie",
    author = "Wolfgang {Wehrmann}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1108766"
}