KRÜGER, Ekkehard; POPPE, Gerhard; SCHWINGER, Tobias; SEILS, Franziska; THÖMING, Anja-Rosa; WACZKAT , Andreas. Zum Gedenken an Karl Heller (1935–2025). Die Musikforschung, [S. l.], v. 78, n. 4, p. 310–310, 2025. DOI: 10.52412/mf.2025.H4.5117. Disponível em: https://mf.publia.org/mf/article/view/5117. Acesso em: 24 juni. 2026.