Mohammed Jumaa, Ahmmed, and Alaa Abdul-Raheem Hammodat. “Stability of Chaotic and Hyperchaotic Finance Systems”. Journal of Education and Science 26, no. 4 (October 1, 2013): 97–106. Accessed September 10, 2025. https://edusj.uomosul.edu.iq/index.php/edusj/article/view/41727.