Sergey V. Laptev, Ali Fadhl Bueawi,. “The Techniques of Distribute Sources of Financing Long-Term Investments Between the State and Oil-Producing Companies: The Experience of Russia and Iraq”. International Journal of Advanced Science and Technology 28, no. 13 (November 4, 2019): 253 - 265. Accessed April 19, 2024. http://sersc.org/journals/index.php/IJAST/article/view/1309.