http://uk.reuters.com/article/uk-britain-eu-immigration-idUKKBN18L0XG
http://www.cesifo-group.de/ifoHome/publications/working-papers/CESifoWP/CESifoWPdetails?wp_num=6452&CESifoWP.search=+
http://HTTPS://WWW.NRC.NL/NIEUWS/2018/12/07/DIE-INFO-OORLOG-WAS-DE-BEDOELING-A3059908?FBCLID=IWAR34TL6J7DLM_CVARMMSXYYNR1MUQKQY-NIIZI4TSDFCC-K0V2HQGZMKHE4&UTM_SOURCE=POLITICO.EU&UTM_CAMPAIGN=DACEE2ECC0-EMAIL_CAMPAIGN_2018_12_1
http://www.europarl.europa.eu/news/en/press-room/20171115IPR88120/ep-ready-to-start-talks-with-eu-governments-on-overhaul-of-dublin-system