Polevoy G. ARTICLE RETRACTED DUE TO PLAGIARISM BY THE AUTHORUsando una técnica experimental para desarrollar la flexibilidad de los niños (Using an experimental technique to develop children’s flexibility): ARTICLE RETRACTED DUE TO PLAGIARISM BY THE AUTHOR. Retos [Internet]. 2024 Jul. 25 [cited 2026 Jan. 12];58:1006-13. Available from: http://revistaretos.org/index.php/retos/article/view/104290