
https://www.opendemocracy.net/en/can-europe-make-it/rest-and-west-thoughts-on-brexit-and-migration-part-one/

http://www.europarl.europa.eu/RegData/etudes/STUD/2017/602028/IPOL_STU(2017)602028_EN.pdf

http://blogs.lse.ac.uk/brexit/2018/05/25/what-are-the-legal-aspects-of-packing-the-lords-with-brexit-friendly-peers/