Danhausa, A. A., R. M. Odekunle, and A. S. Onanaye. “A Modified Spectral Conjugate Gradient Method for Solving Unconstrained Minimization Problems”. Journal of the Nigerian Mathematical Society 39, no. 2 (August 31, 2020): 223–237. Accessed April 25, 2024. https://ojs.ictp.it/jnms/index.php/jnms/article/view/452.