Alexandru, O. ., P. . Alexandru-Rares, U. Bogdan-Constantin, and C. . Adrian. “Optimizing Speed and Agility in a Volleyball Game – Junior Players”. New Trends and Issues Proceedings on Humanities and Social Sciences, vol. 8, no. 3, Oct. 2021, pp. 09-20, doi:10.18844/prosoc.v8i3.6157.