
http://www.conservativehome.com/platform/2017/05/neale-richmond-no-deal-between-britain-and-the-eu-would-be-a-disaster-for-ireland.html

https://www.publications.parliament.uk/pa/ld201617/ldselect/ldeucom/78/78.pdf

https://www.rand.org/pubs/research_reports/RR1786.html