C. Supa, P. Yawara, B. Unpikul, D. Sornsuphap, C. Kalchuk, and S. Thermsuk, “Influences of Alumina Powder on Surface Roughness of Tool Steel Material SKD61 by Lapping Surface Technique”, J. Manuf. Manage. Technol., vol. 3, no. 1, Jun. 2024.