http://www.rug.nl/research/portal/files/41711829/cesifo1_wp6448.pdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmcumeds/365/365.pdf
http://www.conservativehome.com/parliament/2016/04/theresa-mays-speech-on-brexit-full-text.html
http://Position paper transmitted to EU27 on Ongoing Union Judicial and Administrative Procedures