http://www.kasparov.ru/material.php?id=61CD9BB1688EB§ion_id=444F8A447242B
https://www.bbc.com/russian/features-59817247
https://www.bbc.com/russian/news-59815965
https://www.rbc.ru/newspaper/2021/12/29/619f93a29a79479fd98185b7
https://www.rbc.ru/newspaper/2021/12/24/61c42af29a79474d8a0adb28
https://www.kommersant.ru/doc/5143341
https://www.rbc.ru/newspaper/2021/12/24/61c34e3f9a79470ec7ba9221