
https://www.sussex.ac.uk/webteam/gateway/file.php?name=foodbrexitreport-langmillstonemarsden-july2017pdf.pdf&site=25

https://ecfr.eu/wp-content/uploads/2022/02/Tough-trade-The-hidden-costs-of-economic-coercion_Hackenbroich.pdf

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/640485/Technical_note_on_Functionality_and_Protocol_7.pdf