JASIM, Osn. Designing a Proposed Apparatus For Developing Concentration and Shifting Attention In Throwing Events Referees. Journal of Physical Education, Baghdasd, Iraq., v. 28, n. 2, p. 445–458, 2016. DOI: 10.37359/JOPE.V28(2)2016.301. Disponível em: https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/301.. Acesso em: 4 may. 2024.