https://wiiw.ac.at/the-long-way-round-lessons-from-eu-cee-for-improving-integration-and-development-in-the-western-balkans-dlp-6194.pdf
http://blogs.lse.ac.uk/brexit/2017/07/19/euroscepticism-has-taken-hold-across-the-eu-but-it-has-many-different-roots/
http://www.elysee.fr/chronologie/#e17364,2017-09-26,discours-sur-l-europe-grand-amphith-tre-de-la-sorbonne-2