http://euroefe.euractiv.es/1311_actualidad/4466026_la-ampliacion-de-la-ue-provoco-una-fuga-de-cerebros-de-este-a-oeste.html
https://eeas.europa.eu/sites/eeas/files/2_en_act_part1_v9_3.pdf?utm_source=POLITICO.EU&utm_campaign=ab6d830a9d-EMAIL_CAMPAIGN_2017_05_19&utm_medium=email&utm_term=0_10959edeb5-ab6d830a9d-189647205
http://cadmus.eui.eu/bitstream/handle/1814/45187/Ebook_IntegrationMigrantsRefugees2017.pdf?sequence=3&isAllowed=y
http://ourglobalfuture.com/wp-content/uploads/2017/05/Global-Future-The_case_for_immigration.pdf
https://business-humanrights.org/sites/default/files/documents/fra-2017-opinion-01-2017-business-human-rights_en.pdf
https://www.opendemocracy.net/uk/sunny-hundal/millionaire-is-planning-to-spend-around-700000-to-target-pro-remain-mps-at-election?utm_source=Daily+Ne
http://www.ecreu.com/pdfs/alternative-white-paper-presented-by-UK-%20citizens-in-europe.pdf
http://www.europarl.europa.eu/news/en/news-room/20170505STO73515/migration-crisis-73-of-europeans-wants-eu-to-do-more