IVANCHENKO, I. PEDAGOGICAL CONDITIONS OF IMPROVEMENT VOCAL AND CHORAL SKILLS OF STUDENTS IN MUSIC LESSONS. Educational Dimension, Kryvyi Rih, Ukraine, v. 5, p. 202–210, 2003. DOI: 10.31812/educdim.5165. Disponível em: https://journal.kdpu.edu.ua/ped/article/view/5165. Acesso em: 22 jul. 2024.