http://lislampourlesnuls.blogspot.com/2018/12/charte-officielle-des-gilets-jaunes.html
http://comprop.oii.ox.ac.uk/wp-content/uploads/sites/93/2018/07/ct2018.pdf
https://assets.documentcloud.org/documents/7013152/Preventing-a-Disrupted-Presidential-Election-and.pdf
https://www.spiegel.de/international/europe/serbian-president-aleksandar-vucic-playing-with-fire-in-belgrade-a-9adaf3c2-8e4b-4737-98b1-9761fd49828c