RETOS, RETOS. RETRACTION Polevoy, G. (2024). Períodos sensibles de desarrollo de la flexibilidad en la edad escolar (Sensitive periods of flexibility development at school age). Retos, 56, 1066–1074. https://doi.org/10.47197/retos.v56.106243. Retos, [S. l.], v. 63, 2025. DOI: 10.47197/retos.v56.112687. Disponível em: http://207.180.252.49/index.php/retos/article/view/112687. Acesso em: 16 dec. 2025.