Fyliuk, Halyna, and Mariya Kuznetsova. “Technological Modernization of Energy Companies As Basis for Their Sustainable Development”. International Journal of Energy Economics and Policy 8, no. 3 (May 8, 2018): 160–167. Accessed January 10, 2025. https://mail.econjournals.org.tr/index.php/ijeep/article/view/6294.