ศรีเลิศ เกรียงไกร, and คุปตัษเฐียร ณฐา. “Waste Reduction in Induction Hardening Process : A Case Study”. Frontiers in Engineering Innovation Research 14, no. 2 (December 30, 2016): 1–10. accessed April 10, 2025. https://ph01.tci-thaijo.org/index.php/jermutt/article/view/242003.