A. Hamad, Mohammed, and Azher A. Mohammad. “Orbitally Stability of Log-Logistic Autoregressive Model With Application”. Tikrit Journal of Pure Science 30, no. 1 (February 25, 2025): 71–79. Accessed December 19, 2025. https://www.tjpsj.org/index.php/tjps/article/view/1682.