Sarpong-Streetor, Richard Manu Nana Yaw, Rajalingam A/L Sokkalingam, Mahmod bin Othman, Dennis Ling Chuan Ching, and Hamzah bin Sakidin. “A Hybrid Autoregressive Integrated Moving Average-PhGMDH Model to Forecast Crude Oil Price”. International Journal of Energy Economics and Policy 9, no. 5 (July 23, 2019): 135–141. Accessed November 9, 2024. https://econjournals.net.tr/index.php/ijeep/article/view/7987.