@book { CalderndelaBarcaunddasKomische,
    title = "Calderón de la Barca und das Komische",
    author = "Jakob {Kellenberger}",
    year = "1976",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1069735"
}