@book { TemporainChretiensYvain,
    title = "Tempora in Chretiens Yvain",
    subtitle = "Eine textlinguistische Untersuchung",
    author = "Marianne {Wigger}",
    year = "1978",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1070455"
}