http://www.iata.org/whatwedo/Documents/economics/impact_of_brexit.pdf
http://library.fes.de/pdf-files/iez/13375.pdf
https://www.europarl.europa.eu/RegData/etudes/BRIE/2023/754632/EPRS_BRI(2023)754632_EN.pdf
https://ec.europa.eu/commission/publications/agenda-19-june-meeting-between-eu-and-uk-article-50-negotiations_en