Jimenez-Olmedo, Jose Manuel, Alfonso Penichet-Tomas, Sheila Saiz-Colomina, José A. Martínez-Carbonell, and Marcelo A. Jove-Tossi. 2012. “Serve Analysis of Professional Players in Beach Volleyball”. Journal of Human Sport and Exercise 7 (3):706-13. https://doi.org/10.4100/jhse.2012.73.10.