Alaa, Ameer, and Faris Sami. “Energy Expenditure And Its Relation With Load Level Using (PLAYERTEKTEAM) During Matches for Iraqi Soccer Primer Referees”. Journal of Physical Education 31, no. 3 (January 31, 2020): 135–142. Accessed June 30, 2026. https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/868.