Peña-Camacho PM, Mendoza-Garces JA, Medina-Peña R, Alfonso-Caveda D. International transfers of underage athletes: Ecuadorian regulatory framework. RUGC. 2025;4(1):215-224. Accessed October 31, 2026. https://revistacientifica.ugc.mx/index.php/rugc/article/view/298