Volodina, N. V., A. G. Zaluzhny, and D. M. Tarasova. “The Systematic Approach to Modern Political and Legal Systems of States on Countering International (transnational) Extremism”. Amazonia Investiga, vol. 8, no. 20, June 2019, pp. 98-103, https://amazoniainvestiga.info/index.php/amazonia/article/view/68.