Team, Support. 2022. “Lagrange Multipliers, an Elementary Practical Zeroth-Order Approach: Yutthapong Pianroj, Seppo Karrila, Kittisak Tinpun, Aniruth Phon-On”. Thai Journal of Mathematics, March, 54–61. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/1287.