-, -, عبد, and إسراء. “A Study of the Stability for One of Non-Linear Autoregressive Models With Trigonometric Terms With Application”. IRAQI JOURNAL OF STATISTICAL SCIENCES 11, no. 2 (June 25, 2025): 410–432. Accessed August 6, 2025. https://ojs.uomosul.edu.iq/index.php/stats/article/view/20944.