https://www.socialeurope.eu/brexit-shows-us-real-first-world-problems-look-like
https://waitingfortax.com/2017/05/29/sometimes-you-try-and-you-do-not-succeed/?cmpid=BBBXT053017_BIZ&utm_medium=email&utm_source=newsletter&utm_term=170530&utm_campaign=brexit
https://www.esri.ie/system/files/publications/WP677_0.pdf
http://voxeu.org/system/files/epublication/Brexit_Beckons_VoxEU.pdf