Samvel Hakobyan Վ. Ludwig van Beethoven: Revolutionary and Innovator. Musical Armenia, [S. l.], n. 66-67, p. 54–59, 2024. DOI: 10.58580/18290019-2024.1-2-54 . Disponível em: https://yerazhshtakanhayastan.am/index.php/ma/article/view/466. Acesso em: 6 nov. 2025.