Hasantash, Gholam Hossein, Hamidreza Mostafaei, and Shaghayegh Kordnoori. “Modelling the Errors of EIA’s Oil Prices and Production Forecasts by the Grey Markov Model”. International Journal of Economics and Financial Issues 2, no. 3 (June 12, 2012): 312–319. Accessed December 28, 2024. https://econjournals.net.tr/index.php/ijefi/article/view/212.