Flamm, Christoph. „Rutger Helmers : Not Russian Enough? Nationalism and Cosmopolitanism in Nineteenth-Century Russian Opera“. Die Musikforschung 70, no. 2 (Dezember 18, 2024): 182–185. Zugegriffen Januar 18, 2025. https://mf.journals.qucosa.de/mf/article/view/3652.