
http://uk.reuters.com/article/uk-britain-eu-immigration-idUKKBN18L0XG

http://www.euronews.com/2018/07/09/europe-s-immigration-crisis-still-lacks-permanent-solution-does-european-ncna889636

http://library.fes.de/pdf-files/bueros/budapest/15322-20190505.pdf