Y. AL-Bayati, A., B. A. Hassan, and S. S. Ismael. “A Modified Globally Convergent Self-Scaling BFGS Algorithm for Unconstrained Optimization”. Journal of Education and Science (JES), vol. 25, no. 3, Sept. 2012, pp. 54-61, doi:10.33899/edusj.2012.59195.