Y. AL-Bayati, Abbas, and Rana Z. AL-Kawaz. “Two New Extended PR Conjugate Gradient Methods for Solving Nonlinear Minimization Problems”. Journal of Education and Science 27, no. 3 (June 1, 2018): 71–96. Accessed September 10, 2025. https://edusj.uomosul.edu.iq/index.php/edusj/article/view/42289.