@book { EuropischeOperundrussischeModerne,
    title = "Europäische Oper und russische Moderne",
    author = "Florian {Balke}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106651"
}