Karabushchenko, P., A. Ponedelkov, S. Vorontsov, O. Danilyan, and M. Vronskaya. 2018. “Elitology of Education and Challenges of the 21st Century”. Amazonia Investiga 7 (17), 343-52. https://www.amazoniainvestiga.info/index.php/amazonia/article/view/740.