Nasshat Jasim Mohammed, and Ahmed Tallal Jabbar. “Forecasting Air Pollution Using Time Series ”. Journal of Madenat Alelem University College 13, no. 1 (June 30, 2021): 303-318. Accessed October 28, 2021. https://journal.mauc.edu.iq/index.php/JMAUC/article/view/400.