https://ecipe.org/publications/the-gini-trade-index-what-can-we-learn-from-a-new-trade-indicator/
https://www.santandercb.co.uk/sites/default/files/documents/trade_barometer_spring_2022.pdf
https://docs.wto.org/dol2fe/Pages/SS/directdoc.aspx?filename=q:/INF/TESSD/R4.pdf&Open=True
https://blogs.lse.ac.uk/brexit/2021/01/11/article-16-of-the-ireland-northern-ireland-protocol-offers-no-quick-fix/