Y. AL-Bayati, Abbas, Khalil K. Abbo, and Abdulghafour J. S. 2010. “Generalized CG-Algorithms Based on Rational Sigmoid Model for Unconstrained Optimization”. IRAQI JOURNAL OF STATISTICAL SCIENCES 10 (1):123-36. https://doi.org/10.33899/iqjoss.2010.030495.