
https://economy2030.resolutionfoundation.org/wp-content/uploads/2023/06/Trading-Up.pdf

https://www.wto.org/english/news_e/news21_e/acc_10dec21_e.htm

http://www.guengl.eu/uploads/news-documents/Working_paper_Border_controls_on_cross_border_trade_in_goods.pdf