@book { OperaPowerandIdeology,
    title = "Opera, Power and Ideology",
    subtitle = "Anthropological Study of a National Art in Slovenia",
    author = "Vlado {Kotnik Ph.D.}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1136213"
}