
https://leftfootforward.org/2016/04/majority-of-young-people-support-eu-membership-but-half-might-not-even-vote/

https://rusi.org/sites/default/files/briefingpaper-france-uk-2017.pdf

http://blogs.lse.ac.uk/brexit/2018/05/15/switzerland-wanted-more-immigration-controls-but-economic-self-interest-will-probably-prevail/