عبد القادر ا. ع. ا.; منير ا. ع. ا. The Effect Of Special Exercises for Attention Concentration on Learning Overhead pass in volleyball for sophomore students of physical Education & Sport Sciences College. Journal of Physical Education, [S. l.], v. 31, n. 3, p. 19–28, 2020. DOI: 10.37359/JOPE.V31(3)2019.855. Disponível em: https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/855. Acesso em: 29 nov. 2021.