http://www.ips-journal.eu/regions/europe/article/show/myth-of-the-echo-chamber-2135/
https://www.bruegel.org/wp-content/uploads/2021/09/PC-2021-18-0909.pdf
https://securingdemocracy.gmfus.org/wp-content/uploads/2020/08/ASD-Covert-Foreign-Money.pdf
http://www.ips-journal.eu/regions/global/article/show/davos-2018-call-the-doctor-2544/