Gil Arias, Alexander, M. Perla Moreno Arroyo, Alberto Moreno Domínguez, Luís García González, and Fernando Del Villar Álvarez. “Estudio Del Saque En jóvenes Jugadores As De Voleibol, Considerando La Eficacia Y función En Juego (Study of Service in Young Volleyball Players, Taking into Account Efficacy and Role Play)”. Retos 19 (January 1, 2011): 19–24. Accessed September 6, 2025. http://www.revistaretos.org/index.php/retos/article/view/34630.