K. . Sirikasemsuk, T. . Kiatcharoenpol, H. . Waiyaroop, T. . Kullawong, and L. . Treeranurat, “A Study of Factors Affecting The Screw Spacing of Spoilers in Hard Disk Drives for Productivity Increase Using Multiple Regression Analysis”, NUEJ, vol. 16, no. 1, pp. 167–187, Jun. 2021.