Team, Support. “Derivative-Free Three-Term Spectral Conjugate Gradient Method for Symmetric Nonlinear Equations: Mohammed Yusuf Waziri, Muhammad Yusuf Kufena, Abubakar Sani Halilu”. Thai Journal of Mathematics 18, no. 3 (September 1, 2020): 1417–1431. Accessed May 3, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/1080.