https://wiiw.ac.at/the-granular-trade-and-production-activities-grantpa-database-dlp-6911.pdf
https://www.trade.gov/sites/default/files/2023-04/PAC-DBIA%20Report_Apr%202023.pdf
https://unctad.org/news/post-brexit-uk-exports-could-fall-32-billion-due-non-tariff-measures-and-tariffs
https://www.socialeurope.eu/the-discreet-but-dubious-charm-of-tax-treaties