Martín Barrero, Alberto, and Francisco Ignacio Martínez Cabrera. “ The Relative Age Effect in the Development and Selection of U23´s Soccer Players”. Sportis. Scientific Technical Journal of School Sport, Physical Education and Psychomotricity 7, no. 3 (May 1, 2021): 344–362. Accessed May 19, 2024. https://revistas.udc.gal/index.php/SPORTIS/article/view/sportis.2021.7.3.7594.