https://wiiw.ac.at/regulatory-convergence-within-technical-barriers-to-trade-dlp-6630.pdf
https://www.politico.eu/article/eu-sues-china-wto-lithuania-blockade/?utm_source=POLITICO.EU&utm_campaign=04e3cb0104-EMAIL_CAMPAIGN_2022_02_10_09_59&utm_medium=email&utm_term=0_10959edeb5-04e3cb0104-190380769
https://www.brookings.edu/blog/africa-in-focus/2022/12/29/could-africa-replace-china-as-the-worlds-source-of-rare-earth-elements/?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=240276209&utm_source=hs_email