https://publications.parliament.uk/pa/ld5801/ldselect/ldeucom/4/4.pdf
http://blogs.lse.ac.uk/brexit/2018/07/09/british-influence-in-brussels-had-been-far-greater-than-recognised/
http://www.cer.eu/sites/default/files/pb_ireland_brexit_6.7.17.pdf
https://www.socialeurope.eu/lexit-fallacies