Mayadah Khalil Ghaffar. “Study and Analyze the Time Series of Daily Prices Oil World by Using ARIMA(p,d,q) Models”. Tikrit Journal of Pure Science 22, no. 8 (February 1, 2023): 155–164. Accessed June 18, 2025. https://tjpsj.org/index.php/tjps/article/view/864.