https://www.bbc.com/russian/features-59676617
https://www.dw.com/ru/zarubezhnye-aktivy-sssr-chto-do-sih-por-ne-podelili-rf-i-ukraina/a-60118392
https://novayagazeta.ru/articles/2021/12/14/pokhishcheny-i-ubity-agentami-gosudarstva
http://region.expert/belovezh/