Basheer M. Salih, Khalil K. Abbo, and Zeyad M. Abdullah. “Partial Davidon, Fletcher and Powell (DFP) of Quasi Newton Method for Unconstrained Optimization”. Tikrit Journal of Pure Science 21, no. 6 (February 8, 2023): 180–186. Accessed October 25, 2025. https://www.tjpsj.org/index.php/tjps/article/view/1099.