Malysheva, Tatyana V., Izida I. Ishmuradova, and Alla A. Yarlychenko. 2020. “Study of Trends in the Formation of Energy Intensity of Production and the Structure of ‘Energy Portfolio’”. International Journal of Energy Economics and Policy 10 (4):36-42. https://www.econjournals.com/index.php/ijeep/article/view/9545.