MOHAMEED, Sonds; MOHAMEED, Ghzwan. The Effectiveness Of Designed Visual Exercise On Attention On Concentration On Complete Strike Skills of Volleyball-Sitting. Journal of Physical Education, Baghdasd, Iraq., v. 26, n. 4, p. 70–81, 2014. DOI: 10.37359/JOPE.V26(4)2014.554. Disponível em: https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/554.. Acesso em: 9 may. 2024.