A. Hassan, Basim. “A New Theoretical Result for Quasi-Newton Formulae for Unconstrained Optimization”. AL-Rafidain Journal of Computer Sciences and Mathematics 2, no. 2 (December 7, 2005): 41–46. Accessed December 18, 2025. https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36817.