Zainudin, M. ., A. . Arifin, R. L. . Mahmud, and M. H. . Ismail. “Dimensional Analysis and Surface Characterization of Ground Alumina Sintered Guide Pin”. Scientific Research Journal, vol. 18, no. 1, Feb. 2021, pp. 131-42, doi:10.24191/srj.v18i1.11387.