AL-Bayati, Abbas, and Rana AL-Kawaz. “Two New Extended PR Conjugate Gradient Methods for Solving Nonlinear Minimization Problems”. Journal of Education and Science 27, no. 1 (January 1, 2018): 97–115. Accessed October 25, 2025. https://edusj.uomosul.edu.iq/index.php/edusj/article/view/41444.