http://ukandeu.ac.uk/an-utterly-pernicious-bill/
http://www.icaew.com/-/media/corporate/files/technical/economy/brexit/eu-exit-charge.ashx
https://ec.europa.eu/commission/publications/position-paper-transmitted-eu27-goods-placed-market-under-union-law-withdrawal-date_en
http://voxeu.org/system/files/epublication/Brexit_Beckons_VoxEU.pdf