https://www.economicstrategygroup.org/wp-content/uploads/2021/11/5-Bown.pdf
https://unctad.org/news/post-brexit-uk-exports-could-fall-32-billion-due-non-tariff-measures-and-tariffs
https://www.brookings.edu/articles/heres-why-us-africa-trade-under-agoa-has-been-successful-for-some-countries-but-not-others/