Kondakov, V. L., E. N. Kopeikina, D. E. Nikulina, L. N. Voloshina, and N. V. Balysheva. “The Orientation on the student’s Identity and Its Influence on Size and Nature of Physical Activity”. Amazonia Investiga, vol. 7, no. 13, Apr. 2018, pp. 58-64, https://amazoniainvestiga.info/index.php/amazonia/article/view/494.