Mahdi, Marwan, and Falih Hashim. “The Effect Of Exercises Using Non – Balanced Strength Device On Improving Maximum Strength And Snatch Achievement In Youth Weightlifters”. Journal of Physical Education, vol. 31, no. 3, Sept. 2019, pp. 39-46, https://doi.org/10.37359/JOPE.V31(3)2019.857.