Kirpikov, A. ., Baranov, A. ., & 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, (11), 66–68. Retrieved from http://tpfk.ru/index.php/TPPC/article/view/55 (Original work published November 1, 2021)