Sabeeh, Yassar. “Special Exercises and Their Effect in the Development of Speed and Achievement 50m Freestyle Swimming for Men With Class (S9 – S10) Disability”. Journal of Physical Education, vol. 28, no. 4.2, Dec. 2016, pp. 275-86, https://doi.org/10.37359/JOPE.V28(4.2)2016.247.