http://fedtrust.co.uk/brexit-a-meaningful-vote-for-mps-implies-a-meaningful-vote-for-the-people/
https://publications.parliament.uk/pa/bills/cbill/2019-2020/0007/20007.pdf
http://www.guengl.eu/news/article/eu-citizens-rights-and-status-of-north-of-ireland-must-be-prioritised-in-br
https://onlinelibrary.wiley.com/doi/epdf/10.1111/jcms.13386