FREQUENCY ANALYSIS OF SACRED SOUND OM (AUM). International Engineering Journal For Research & Development, [S. l.], v. 6, n. ICMRD21, p. 7, 2021. DOI: 10.17605/OSF.IO/YSC6R. Disponível em: https://www.iejrd.com/index.php/iejrd/article/view/1775. Acesso em: 24 oct. 2026.