Ibrahim, Sulaiman Mohammed, Usman Abbas Yakubu, and Mustafa Mamat. “Application of Spectral Conjugate Gradient Methods for Solving Unconstrained Optimization Problems”. An International Journal of Optimization and Control: Theories & Applications (IJOCTA) 10, no. 2 (June 4, 2020): 198–205. Accessed January 9, 2025. http://ijocta.org/index.php/files/article/view/859.