ÖZBEK, Y.; DURMAN, M. Wear Properties of AISI 4140 Steels Modificated By Using Pulse Plasma Technique. International Conference on Plasma Surface Engineering, [S. l.], v. 2, n. 13, p. 287–290, 2013. DOI: 10.3384/wcc2/287-290. Disponível em: https://wcc.ep.liu.se/index.php/PSE/article/view/451. Acesso em: 20 jan. 2022.