https://www.ips-journal.eu/topics/future-of-social-democracy/where-is-italy-heading-5337/
https://hbr.org/cover-story/2018/07/truth-disrupted
http://www.lisbon-treaty.org/wcm/the-lisbon-treaty/treaty-on-european-union-and-comments/title-1-common-provisions/7-article-7.html
http://www.congreso.es/public_oficiales/L13/CONG/BOCG/B/BOCG-13-B-29-1.PDF#page=1