https://www.socialeurope.eu/israel-palestine-a-comparative-perspective
https://committees.parliament.uk/oralevidence/2766/pdf/
https://www.nmc.org.uk/globalassets/sitedocuments/other-publications/nmc-register-2013-2017.pdf
http://www.guengl.eu/news/article/gue-ngl-news/adoption-of-the-european-travel-information-and-authorisation-system-a-hidd