@book { LoyaltyandRichesinWolframsParzival,
    title = "Loyalty and Riches in Wolfram's «Parzival»",
    author = "Randal {Sivertson}",
    year = "1999",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1088324"
}