http://www.kasparov.ru/material.php?id=61EFDA317E970§ion_id=444F8A447242B
https://fakeoff.org/history/neudobnaya-pravda-o-moskovskikh-samozvantsakh-prozvannykh-tsaryami
https://www.rosbalt.ru/world/2022/01/21/1940571.html
https://www.levada.ru/2022/01/21/otnosheniya-mezhdu-rpts-i-rimsko-katolicheskoj-tserkovyu/