http://www.lisbon-treaty.org/wcm/the-lisbon-treaty/treaty-on-european-union-and-comments/title-1-common-provisions/7-article-7.html
https://esharp.eu/opinion/flexibility-is-not-the-miracle-solution
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/725288/The_future_relationship_between_the_United_Kingdom_and_the_European_Union.pdf
https://d3n8a8pro7vhmx.cloudfront.net/in/pages/15721/attachments/original/1537281950/roadmap_pv.pdf?1537281950
https://blogs.imf.org/2017/12/07/chart-of-the-week-sharing-the-wealth-inequality-and-who-owns-what/
https://www.britishcouncil.org/sites/default/files/the_value_of_trust.pdf
https://hbr.org/cover-story/2018/07/truth-disrupted
https://www.persee.fr/doc/rfeco_0769-0479_1995_num_10_2_978