https://openmigration.org/analisi/lampedusa-10-anni-dopo-il-naufragio-e-il-cordoglio/
http://www.ecreu.com/pdfs/alternative-white-paper-presented-by-UK-%20citizens-in-europe.pdf
https://www.strategie.gouv.fr/sites/strategie.gouv.fr/files/atoms/files/fs-2020-na91-niveau-territoire-juin.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/766465/The-UKs-future-skills-based-immigration-system-print-ready.pdf