Karabushchenko, P. L., A. V. Ponedelkov, S. A. Vorontsov, O. G. Danilyan, and M. V. Vronskaya. “Elitology of Education and Challenges of the 21st Century”. Amazonia Investiga 7, no. 17 (December 27, 2018): 343–352. Accessed July 3, 2024. https://amazoniainvestiga.info/index.php/amazonia/article/view/740.