https://www.radiosvoboda.org/a/shpyhunskyy-skandal-italiya-stavyt-rosiyu-na-mistse/31182294.html
https://www.ng.ru/world/2021-03-31/1_8116_italy.html
https://www.ng.ru/politics/2021-03-31/3_8116_migrants.html
https://ru.krymr.com/a/rossia-shpionazh-bolgaria/31173921.html
https://www.thetimes.co.uk/article/edinburgh-professor-gave-names-to-fake-russia-spy-68n2n3bzj
https://www.inopressa.ru/article/26Mar2021/wsj/bulgaria.html