TEH, T. O.; SINGH, A.; ALI, J.; NG, C. A.; NG, X. Y.; WONG, J. W.; SAW, S. H.; LEE, S. A Study on the Surface Hardness Obtained by Nitriding with a Plasma Focus Machine. Walailak Journal of Science and Technology (WJST), [S. l.], v. 16, n. 6, p. 379–384, 2018. DOI: 10.48048/wjst.2019.6268. Disponível em: https://wjst.wu.ac.th/index.php/wjst/article/view/6268. Acesso em: 30 nov. 2022.