https://www.kommersant.ru/doc/5051898
http://region.expert/newpeople/
https://jamestown.org/program/how-new-are-the-new-people-in-russias-parliament/
https://novayagazeta.ru/articles/2021/10/06/novye-podpolshchiki
https://www.levada.ru/2021/10/05/itogi-vyborov/