https://www.novayagazeta.ru/articles/2018/09/13/77815-solsberetskiy-sobor-s-chasovym-mehanizmom
https://www.inopressa.ru/article/13Sep2018/letemps/suspects.html
https://www.inopressa.ru/article/13Sep2018/guardian/poland.html
https://www.inopressa.ru/article/13Sep2018/theatlantic/vostok.html
https://politeka.net/reading/analytics/729135-vostok-2018-rossija-igraet-muskulami/
Huit jours après les révélations fracassantes de Londres sur les deux suspects de l’attaque au gaz Novitchok, Mosco
https://www.letemps.ch/monde/poutine-invite-suspects-television
Reports say man convicted of organising recordings owed millions to Russian coal firm
https://www.theguardian.com/world/2018/sep/12/russia-linked-2014-wiretapping-scandal-poland