Osorio Curbelo, Fausto Lorenzo, y Bernardo Jeffers Duarte. 2019. «A METHODOLOGICAL THEORETICAL CONCEPTION OF THE PHYSICAL CONDITION CONTEXTUALIZED IN THE PHYSICAL REQUIREMENT OF COMPETITION IN HIGH-PERFORMANCE YOUTH CHESS». Opuntia Brava 9 (Especial):215-30. https://opuntiabrava.ult.edu.cu/index.php/opuntiabrava/article/view/843.