https://onlinelibrary.wiley.com/doi/epdf/10.1111/jcms.13386
https://www.fragomen.com/file/scottishfuturespdf
https://www.sussex.ac.uk/webteam/gateway/file.php?name=briefing-paper-1.pdf&site=18
https://www.gov.uk/government/news/david-davis-closing-remarks-at-the-end-of-the-fourth-round-of-eu-exit-negotiations-in-brussels