AKHMADULLIN, M. L. Musical Symbols in the Typographic Art of Urals and Volga River Basin. Music Scholarship / Problemy Muzykal’noj Nauki, [S. l.], v. 6, n. 1, p. 117–121, 2010. Disponível em: https://musicscholar.ru/index.php/PMN/article/view/612. Acesso em: 3 jul. 2024.