Kirpikov, A.R., A.A. Baranov, and N.Y. Erofeeva. 2021. “Teenage Martial Arts Groups: Trainer’s Locus of Control Versus Trainees Self-Control Tests and Analyses”. Theory and Practice of Physical Culture, no. 11 (November). http://tpfk.ru/index.php/TPPC/article/view/55.