@book { DiePolitisierungderOperim19Jahrhundert,
    title = "Die Politisierung der Oper im 19. Jahrhundert",
    author = "Maria {Birbili}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04091-3",
    url = "https://www.peterlang.com/document/1048009"
}