Y. Al-Bayati, Abbas, and Abdulghafor M. Al-Rozbayani. 2005. “Modified the CG-Algorithm for Unconstrained Non-Linear Optimization by Using Oren’s Update”. AL-Rafidain Journal of Computer Sciences and Mathematics 2 (2):11-19. https://doi.org/10.33899/csmj.2005.164078 .