Gasim Salim, Abdulghafoor, عبد, Anas Salim Youns Abdullah, and أنس. “Studying the Stability of a Non-Linear Autoregressive Model (Polynomial With Hyperbolic Cosine Function)”. AL-Rafidain Journal of Computer Sciences and Mathematics 11, no. 1 (June 25, 2025): 81–91. Accessed August 3, 2025. https://rjps.uomosul.edu.iq/index.php/csmj/article/view/19393.