@book { DieEntstehungderOperDieFrauohneSchattenvonRichardStrauss,
    title = "Die Entstehung der Oper «Die Frau ohne Schatten» von Richard Strauss",
    author = "Olaf {Enderlein}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-06544-2",
    url = "https://www.peterlang.com/document/1061440"
}