
http://www.cer.eu/sites/default/files/pb_ireland_brexit_6.7.17.pdf

https://centreonconstitutionalchange.ac.uk/sites/default/files/2021-04/Union%20at%20the%20Crossroads.pdf

https://share.trin.cam.ac.uk/sites/public/Comms/Rogers_brexit_as_revolution.pdf