https://www.rbc.ru/newspaper/2021/10/27/6177cdaf9a7947130abd9129
https://www.ng.ru/economics/2021-10-20/1_8282_income.html
https://carnegie.ru/commentary/85483
http://region.expert/landscape/
https://jamestown.org/program/clashes-intensify-between-moscow-and-circassians-on-key-issues/