Bulgakov, Andrey, and Arseniy Krikunov. “The Harmonization of Eco-Efficiency Standards: An Analysis on the Energy Enterprises of the G7 Group and the Emerging E7 Countries”. International Journal of Energy Economics and Policy 10, no. 2 (January 21, 2020): 227–232. Accessed December 15, 2024. https://econjournals.com/index.php/ijeep/article/view/9065.