http://www.icaew.com/-/media/corporate/files/technical/economy/brexit/eu-exit-charge.ashx
https://institute.global/policy/three-years-brexit-casts-long-shadow-over-uk-economy?utm_campaign=37971-&utm_medium=email&utm_source=Institute%20Interests
https://www.bloomberg.com/politics/articles/2017-06-08/brexit-rallying-cry-exposes-a-nation-divided-by-austerity?cmpid=BBBXT060817_BIZ&utm_medium=email&utm_source=newsletter&utm_term=170608&utm_campaign=brexit
http://www.guengl.eu/uploads/news-documents/Working_paper_Border_controls_on_cross_border_trade_in_goods.pdf