Boiarov, Viktor, Mikhail Larkin, Kyrylo Legkykh, Oleksandr Melkovskyi, and Maryna Hromova. “Ways of Prevention of Funding for Youth Informal Groups of Extremist Orientation”. Amazonia Investiga 8, no. 24 (November 21, 2019): 479-483. Accessed December 4, 2023. https://amazoniainvestiga.info/index.php/amazonia/article/view/1007.