Gorbunova, Irina B., and Sergey A. Morozov. “On Teaching Visually Impaired Students in Russian Educational Institutions of Music”. The Journal of Contemporary Issues in Business and Government, vol. 27, no. 1, Feb. 2021, pp. 3244-66, https://cibgp.com/index.php/1323-6903/article/view/789.