Abu Hassan, Malik, Mansor Monsi, and Wah June Leong. “Numerical Experiments With Matrices Storage Free BFGS Method for Large Scale Unconstrained Optimization”. MATEMATIKA 19 (December 1, 2003): 107–119. Accessed April 27, 2024. https://matematika.utm.my/index.php/matematika/article/view/507.