Kalchuk, Chanathip, and Kanisorn Phunikom. “Design of Experiments for Analyzing Factors Affecting to Napier Grass Cutting Efficiency”. Thai Industrial Engineering Network Journal 5, no. 2 (December 27, 2019): 20–26. accessed September 11, 2026. https://ph02.tci-thaijo.org/index.php/ienj/article/view/195176.