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://committees.parliament.uk/publications/40412/documents/197199/default/
https://ukandeu.ac.uk/wp-content/uploads/2020/05/UKICE-Post-Brexit-Gov-NI-Report.pdf