
https://www.mckinsey.com/mgi/our-research/the-complication-of-concentration-in-global-trade

https://www.nakedcapitalism.com/2018/02/another-brexit-mess-grandfathering-existing-free-trade-agreements-looks-unlikely.html

https://www.niesr.ac.uk/wp-content/uploads/2023/11/JC760-NIESR-Outlook-Autumn-2023-Global-Topical-Feature-v2.pdf