https://www.bbc.com/russian/media-58806474
https://www.svoboda.org/a/posle-hruscheva-i-gorbacheva-zhdatj-li-rossii-reformatora/31500658.html
https://jamestown.org/program/clashes-intensify-between-moscow-and-circassians-on-key-issues/
https://carnegie.ru/commentary/85351
http://www.kasparov.ru/material.php?id=613900530B375§ion_id=444F8A447242B
https://www.kommersant.ru/doc/4702608