Majeed Rasool Almamar, Mohammed, et al. “Short-Term and Long-Term Asymmetric Effects of Macroeconomic Variables on Foreign Direct Investment Flows Using the PMG Approach (Case Study: Selected OPEC Member Countries)”. Journal of Resource Management and Decision Engineering, vol. 3, no. 3, Aug. 2024, pp. 11-20, https://www.journalrmde.com/index.php/jrmde/article/view/75.