Can, Nguyen Van. “Application and Evaluation of the Effectiveness of Speed-Strength Development Exercises for Male Volleyball Athletes Aged 14–15 at the Hanoi Sports Training and Competition Center”. International Journal of Humanities and Education Development (IJHED), vol. 7, no. 6, Dec. 2025, pp. 137-45, https://doi.org/10.22161/jhed.7.6.15.