https://www.wto.org/english/res_e/booksp_e/00_gvc_dev_report_2021_e.pdf
https://www.iisd.org/system/files/2023-03/joint-initiative-investment-facilitation-mc13-en.pdf
https://www.cecimo.eu/wp-content/uploads/2022/01/OP0122_Paper.pdf
https://ukandeu.ac.uk/wp-content/uploads/2021/11/Brexit-and-Services-Trade-Working-Paper.pdf