https://www.kp.ru/daily/27251.5/4381580/
http://region.expert/udmurt_culture/
http://region.expert/economic_federalism/
https://theins.ru/history/239883
http://region.expert/which_federation/
https://www.znak.com/2021-03-01/raspad_gosudarstva_v_rossiyskoy_stolice_ubiystv_reportazh
https://www.gazeta.ru/politics/2021/02/28_a_13495280.shtml
https://novayagazeta.ru/articles/2021/02/28/89423-tretya-popytka