https://www.opendemocracy.net/kamil-matuszczyk/migration-crisis-in-2017-challenges-for-eu-solidarity
http://go.carnegieendowment.org/iHTP0VPKETn00o001NP0V0F
https://www.congreso.es/public_oficiales/L15/CONG/BOCG/B/BOCG-15-B-32-1.PDF
https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:52023DC0800