
http://www.cer.org.uk/sites/default/files/insight_js_st_9.6.17.pdf

https://www.instituteforgovernment.org.uk/sites/default/files/publications/voting-on-brexit-report-final.pdf

https://ukandeu.ac.uk/long-read/the-protocol-post-brexit-northern-ireland/?mc_cid=9de7c359e6&mc_eid=815b1928ec