Sayed, Mohamed Noureldin, Ghada H. Ashour, and Nesrin A. Abbas. 2021. “The Impact of the Volatility in Oil Prices on Saudi Arabia’s and Algeria’s Military Expenditure: A Comparative Study”. International Journal of Energy Economics and Policy 11 (6):180-90. https://econjournals.com.tr/index.php/ijeep/article/view/11693.