https://www.gov.uk/guidance/status-of-eu-nationals-in-the-uk-what-you-need-to-know
https://www.bloomberg.com/opinion/articles/2020-12-18/britain-and-europe-s-fish-fight-reveals-ultimate-brexit-truths
https://www.cesifo-group.de/DocDL/ifoDD_18-01_03-09_Ochsner.pdf