https://www.socialeurope.eu/european-election-defence-and-a-european-constitution
https://www.cgdev.org/blog/beyond-brexit-end-eu-uk-free-movement-should-reset-debate-uk-migration-policy
http://blog.lboro.ac.uk/crcc/general-election/media-coverage-of-the-2017-general-election-campaign-report-4/?utm_source=twitter&utm_medium=social&utm_campaign=ge2017&utm_content=coverage#coverage
http://unesdoc.unesco.org/images/0021/002178/217876e.pdf