
http://ukandeu.ac.uk/wp-content/uploads/2018/10/The-mechanics-of-a-further-referendum-on-Brexit-Constitution-Unit-Report-1.pdf

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/637748/Future_customs_arrangements_-_a_future_partnership_paper.pdf

http://www.irishnews.com/news/republicofirelandnews/2017/07/03/news/british-withdrawal-from-fishing-arrangement-unwelcome-and-unhelpful-says-irish-government-1073320/