GAIŽUTIS, Algirdas. Musical Education and Human Harmony. Problemos, [S. l.], v. 30, p. 128–129, 1983. DOI: 10.15388/Problemos.1983.30.6441. Disponível em: https://www.zurnalai.vu.lt/problemos/article/view/6441. Acesso em: 13 nov. 2025.