https://www.socialeurope.eu/2017/06/theresa-mays-other-citizens-of-nowhere/
https://www.tandfonline.com/doi/full/10.1080/13511610.2021.1968355
http://cadmus.eui.eu/bitstream/handle/1814/45187/Ebook_IntegrationMigrantsRefugees2017.pdf?sequence=3&isAllowed=y
https://blogs.lse.ac.uk/brexit/2020/02/21/migration-how-scotland-hoped-to-do-things-differently/