-, -, الهام, and ظافر. “Employ the Principal Componants Manner in the Forecasting by Box – Jenkins Models”. IRAQI JOURNAL OF STATISTICAL SCIENCES 7, no. 1 (June 25, 2025): 22–33. Accessed August 6, 2025. https://ojs.uomosul.edu.iq/index.php/stats/article/view/20714.