
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/502291/54284_EU_Series_No1_Web_Accessible.pdf

https://blogs.lse.ac.uk/brexit/2019/04/15/brexit-lessons-from-the-silesian-backstop-of-1919-25/

http://blogs.lse.ac.uk/brexit/2018/01/12/the-usual-underdogs-of-lobbying-were-the-surprising-winners-of-the-brexit-vote-debate/