Pysar, Nadiia, Dergachova Viktoria, Olena Vynogradova, and Olga Guseva. “Gross Domestic Product Energy Intensity Level As a Criterion for Evaluating the Energy Security of National Economy”. International Journal of Energy Economics and Policy 10, no. 4 (May 16, 2020): 424–429. Accessed January 10, 2025. https://mail.econjournals.org.tr/index.php/ijeep/article/view/9420.