http://blogactiv.eu/blog/2012/05/15/stumbling-towards-the-brexit/
https://corporateeurope.org/power-lobbies/2017/12/big-business-brexit-corporate-interests-still-dominate-brexit-and-trade
http://ukandeu.ac.uk/an-utterly-pernicious-bill/
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/648148/September_-_Joint_technical_note_on_the_comparison_of_EU-UK_positions_on_citizens__rights.pdf