https://www.lexpress.fr/actualite/sciences/comment-la-russie-espionne-la-france_2035113.html
https://www.inopressa.ru/article/13Sep2018/letemps/suspects.html
https://www.inopressa.ru/article/13Sep2018/guardian/poland.html
http://khpg.org/en/index.php?id=1536709734&w=Halya%20Coynash
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
https://ru.krymr.com/a/krymskij-proshchet-rossijskih-impertsev/29484510.html
http://www.kasparov.ru/material.php?id=5B98EFB5AEDF5
https://www.inopressa.ru/article/12Sep2018/spiegel/solotow.html