https://theins.ru/politika/246166
https://www.levada.ru/2021/10/29/pytki/
http://region.expert/republic/
https://www.ft.com/content/020de965-429e-4fb9-9eed-f7e4370514b3
https://jamestown.org/program/russias-cossacks-strategic-asset-or-financial-liability/