
https://www.occrp.org/en/investigations/new-evidence-bolsters-allegations-adani-group-overcharged-for-coal

https://cyberbrics.info/wp-content/uploads/2021/10/Ian-Brown-COMPETITION-POLICY-BRIEFINGS-IN-THE-BRICS.pdf

https://ecipe.org/publications/the-gini-trade-index-what-can-we-learn-from-a-new-trade-indicator/