K. Kagigi , Dr. Ahmed, and Dr. Khaled A. Kagigi. “ Causality and Intern Portfolio Diversification: An Investigation of Diversification Op-in the MENA Markets”. Dirasat in Economics and Business 40, no. 1 (April 1, 2021). Accessed June 5, 2026. https://journals.uob.edu.ly/index.php/DEB/article/view/3849.