
https://wiiw.ac.at/shifting-patterns-of-migration-in-europe-new-source-countries-old-challenges-dlp-6915.pdf

http://www.migrationobservatory.ox.ac.uk/resources/commentaries/brexodus-migration-and-uncertainty-after-the-eu-referendum/

https://www.migrationpolicy.org/news/eu-pact-migration-asylum-bold-move-avoid-abyss