Ishker, Nermeen, Hanadi Taher, and Maggie Houshaimi. “Oil Dependence, Economic Diversification, and Economic Growth in GCC Countries: A New Composite Index and PMG–ARDL Evidence”. International Journal of Energy Economics and Policy 16, no. 2 (January 30, 2026): 230–241. Accessed April 15, 2026. https://econjournals.com/index.php/ijeep/article/view/22501.