https://www.iisd.org/system/files/2023-03/joint-initiative-investment-facilitation-mc13-en.pdf
https://unctad.org/news/post-brexit-uk-exports-could-fall-32-billion-due-non-tariff-measures-and-tariffs
https://home.kpmg.com/content/dam/kpmg/nl/pdf/2018/sector/overheid/impact-van-non-tarifaire-handelsbelemmeringen-als-gevolg-van-brexit.pdf
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/637748/Future_customs_arrangements_-_a_future_partnership_paper.pdf