Harutyunyan Հ. Հ. Some Methodological Principles in Professor Robert Atayan’s Special Class. Musical Armenia, [S. l.], v. 2, n. 61, p. 29–33, 2022. Disponível em: https://yerazhshtakanhayastan.am/index.php/ma/article/view/70. Acesso em: 8 sep. 2024.