@book { 400JahreDonQuijote,
    title = "400 Jahre «Don Quijote»",
    author = "Klaus-Dieter {Ertler} and Sonja M. {Steckbauer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1102863"
}