TRUBINA, Irena; SILE, Maruta. Development of Adolescent Individual Attention Focus Abilities during Vocal Ensemble Sessions. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference, Rezekne, Latvia, v. 2, p. 445–452, 2015. DOI: 10.17770/sie2015vol2.421. Disponível em: https://journals.ru.lv/index.php/SIE/article/view/421.. Acesso em: 2 may. 2024.