https://www.svoboda.org/a/kak-rossiya-zastavlyaet-golosovatj-zhiteley-ldnr/31456501.html
https://jamestown.org/program/the-russian-elections-and-hidden-regionalist-politics/
http://www.kasparov.ru/material.php?id=613C821014699§ion_id=444F8A447242B
https://www.letemps.ch/monde/russie-trucage-generalise-amont-legislatives
https://www.kommersant.ru/doc/4978146
https://carnegie.ru/commentary/85298
https://novayagazeta.ru/articles/2021/09/07/izbirkomy-snimaiut-s-vyborov