Hussein, Ahmed Moayad, and Mohammed Zuhair Hassan. “Standardization of the Carlson Fatigue Curve Test for Soccer Players The Number of Applicants in Nineveh Governorates”. Kufa Journal of Physical Education Sciences, vol. 1, no. 5, Dec. 2021, pp. 14-36, https://journal.uokufa.edu.iq/index.php/kjpes/article/view/15432.