https://www.inopressa.ru/article/13Sep2018/letemps/suspects.html
https://www.inopressa.ru/article/13Sep2018/guardian/poland.html
https://www.kommersant.ru/doc/3739356
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
http://www.dsnews.ua/world/parad-idiotizma-zachem-putin-slil-otraviteley-skripaley-12092018220000
https://www.gazeta.ru/business/2018/09/12/11962873.shtml