@book { WalthervonderVogelweide,
    title = "Walther von der Vogelweide",
    subtitle = "Beiträge zu Produktion, Edition und Rezeption",
    author = "Thomas {Bein}",
    year = "2002",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1094197"
}