Efimov A.A., Ponomarev V.V., and Prikhodov D.S. 2025. “National Sports and Competitions in Applied Physical Education of Schoolchildren of the Sakha Republic: Theoretical Aspect”. Theory and Practice of Physical Culture, no. 2 (March):78-79. http://tpfk.ru/index.php/TPPC/article/view/1267.