http://region.expert/landscape/
https://www.svoboda.org/a/chudesa-yaschika-pandory-pod-kontrolem-putina/31495650.html
https://jamestown.org/program/how-new-are-the-new-people-in-russias-parliament/
https://novayagazeta.ru/articles/2021/10/06/novye-podpolshchiki
https://theins.ru/korrupciya/244266
https://www.bbc.com/russian/features-58797204
https://www.bbc.com/russian/features-58797196
https://newtimes.ru/articles/detail/205282?fcc