Mungkala, C., P. Bunpatcharacharoen, and J. Janwised. 2017. “SOLVE ONE-DIMENSIONAL OPTIMIZATION PROBLEMS USING NEWTON-RAPHSON METHOD”. Journal of Nonlinear Analysis and Optimization: Theory & Applications (JNAO) 8 (2):109-20. https://ph03.tci-thaijo.org/index.php/jnao/article/view/2859.