
https://www.parliament.uk/documents/commons-committees/culture-media-and-sport/Background%20paper%20-%202016%20Referendum%20Expenses%20Opinion%20-%20Matrix%20Chambers.pdf

https://onlinelibrary.wiley.com/doi/epdf/10.1111/jcms.13386

https://www.niauk.org/media-centre/blog/uk-explore-retaining-membership-euratom/