http://ecipe.org/publications/the-uks-first-international-trade-negotiation/?chapter=all
http://www.chinese-embassy.org.uk/eng/ambassador/t1720992.htm
https://www.economiesuisse.ch/de/artikel/faktencheck-bilaterale-iii
https://ecipe.org/wp-content/uploads/2024/02/ECI_OccasionalPaper_01-2024_LY06.pdf