Vassil, Karin, and Boris Bazanovk. “The Effect of Plyometric Training Program on Young Volleyball Players in Their Usual Training Period”. Journal of Human Sport and Exercise 7, no. 1proc (May 23, 2012): S35-S40. Accessed April 25, 2024. https://www.jhse.ua.es/article/view/2012-v7-n1-proc-the-effect-of-plyometric-training-program-on-you.