
https://www.niesr.ac.uk/sites/default/files/publications/NIESR%20Report%20Brexit%20-%202018-11-26.pdf

https://ec.europa.eu/commission/publications/terms-reference-article-50-treaty-european-union-negotiations_en

https://www.gov.uk/government/news/pms-open-letter-to-eu-citizens-in-the-uk