https://hansard.parliament.uk/commons/2018-03-07/debates/65828E0C-3CC7-43AE-B5D2-B5F1B5D42A4C/EuropeanUnionCitizenship
http://www.oliverwyman.com/content/dam/oliver-wyman/v2/publications/2018/march/Oliver-Wyman_Clifford-Chance-The-Red-Tape-Cost-of-Brexit.pdf
https://agroecology-appg.org/wp-content/uploads/2018/01/APPG-on-Agroecology-Inquiry-into-Trade-Post-Brexit-FF1.pdf