https://www.wto.org/english/res_e/reser_e/ersd201704_e.pdf
https://www.ui.se/globalassets/ui.se-eng/publications/sceeus/russia-china-energy-relations-since-24-february.pdf
https://cdn.ymaws.com/www.export.org.uk/resource/resmgr/docs/policy_papers/IOE&IT_report_with_EY_TradeT.pdf