https://cerre.eu/wp-content/uploads/2023/07/CERRE-Draft-Issue-Paper-DMA-Output-Indicators.pdf
https://lawliberty.org/why-we-should-care-that-tariffs-are-taxes/
https://www.cfr.org/blog/power-and-financial-interdependence
https://www.wto.org/english/res_e/reser_e/ersd201704_e.pdf