https://www.wto.org/english/res_e/booksp_e/gvc_dev_report_2019_e.pdf
https://wiiw.ac.at/trade-balances-and-international-competitiveness-in-cyber-physical-digital-task-intensive-ict-capital-intensive-and-traditional-industries-dlp-6561.pdf
https://www.mofa.go.jp/files/100114853.pdf
https://www.ui.se/globalassets/ui.se-eng/publications/sceeus/russia-china-energy-relations-since-24-february.pdf