Davidova, Jelena, et al. “PSYCHOLOGICAL ASPECTS OF DEVELOPMENT OF COORDINATION BETWEEN 6-8 YEARS OLD CHILDREN’S MUSICAL HEARING AND VOCAL APPARATUS”. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference, vol. 4, May 2017, pp. 39-49, https://doi.org/10.17770/sie2017vol4.2437.