
http://www.wsta.co.uk/images/Brexit/Brexit_FINAL.pdf

https://www.theguardian.com/politics/2017/nov/10/brexit-date-is-not-irreversible-says-man-who-wrote-article-50-lord-kerr

http://www.imf.org/en/News/Articles/2017/05/12/ms051217-ireland-staff-concluding-statement-of-the-2017-article-iv-consultation