Algül, Yahya, and Deniz Erenel. “The Impact of R&D Expenditures on Regional Energy Intensity in Turkey”. International Journal of Energy Economics and Policy 14, no. 5 (September 7, 2024): 546–557. Accessed January 10, 2025. https://mail.econjournals.org.tr/index.php/ijeep/article/view/16907.