
https://yougov.co.uk/news/2017/04/26/voting-intention-conservatives-45-labour-29-25-26-/

https://www.hks.harvard.edu/sites/default/files/centers/mrcbg/programs/senior.fellows/Brexit%20Paper%20IV%20-%20Final%20Paper.pdf

https://www.gov.uk/guidance/status-of-eu-nationals-in-the-uk-what-you-need-to-know