Zeyad Mohammed Abdullah, and Iman Khalid Jamalaldeen. “A New Hybrid of DY and CGSD Conjugate Gradient Methods for Solving Unconstrained Optimization Problems”. Tikrit Journal of Pure Science 26, no. 5 (September 7, 2021): 86–91. Accessed October 26, 2025. https://www.tjpsj.org/index.php/tjps/article/view/183.