http://www.ng.ru/editorial/2018-02-15/2_7173_red.html
https://www.kommersant.ru/doc/3549629
https://www.kommersant.ru/doc/3549203
Russia’s opposition leader has urged Google and Facebook to refuse Kremlin demands to block his latest investigation about a government official meeting an olig
https://www.thetimes.co.uk/article/don-t-cave-in-to-kremlin-navalny-tells-tech-giants-rn8jhwmhv
https://www.kommersant.ru/doc/3548200
https://www.inopressa.ru/article/14Feb2018/wp/dissident.html
https://www.inopressa.ru/article/14Feb2018/times/navalniy01.html
http://www.ng.ru/politics/2018-02-14/3_7172_yavlinsky.html