Alkhateeb, Tarek Tawfik Yousef, and Haider Mahmood. “Oil Price and Capital Formation Nexus in GCC Countries: Asymmetry Analyses”. International Journal of Energy Economics and Policy 10, no. 6 (October 10, 2020): 146–151. Accessed April 29, 2026. https://econjournals.com/index.php/ijeep/article/view/10013.