Hvidtfelt Nielsen, Svend. “An Energetic Analysis of the First Movement of Nielsen’s Sinfonia Espansiva: The Espansiva As an Expression of Force, Space, Accumulation and Acceleration”. Carl Nielsen Studies 7 (April 30, 2026). Accessed May 1, 2026. https://tidsskrift.dk/carlnielsenstudies/article/view/167541.