https://www.rbc.ua/rus/news/monobolshinstvo-putina-edinaya-rossiya-vyigrala-1632135101.html
https://www.nytimes.com/2021/09/19/opinion/putin-russia-election.html
https://www.rosbalt.ru/world/2021/09/15/1921413.html
http://www.kasparov.ru/material.php?id=613900530B375§ion_id=444F8A447242B
https://echo.msk.ru/blog/movchan_a/2900202-echo/