Loboda, Larysa. “ACTUAL PRINCIPLES OF FORMATION OF VOCAL TECHNIQUE OF OPERA SINGERS: METHODICAL ASPECT”. Music art and culturе 2, no. 31 (May 20, 2021): 238-248. Accessed October 27, 2026. http://music-art-and-culture.com/index.php/music-art-and-culture-journal/article/view/633.