Abdullah Hameed Saleh Al-thubaini. “Determine the Contribution Ratio of Some Power and Speed Indicators Accord-Ing to the Biosyn System With the Accuracy of the Spiking Skill of Young Volleyball Players”. Mustansiriyah Journal of Sports Science, vol. 5, no. 1, Feb. 2024, pp. 147-55, https://mjss.uomustansiriyah.edu.iq/index.php/mjss/article/view/216.