Study of Hardness and Electrical Properties of Prepared Metal Graphite Composite Brushes. Tikrit Journal of Engineering Sciences, [S. l.], v. 17, n. 1, p. 49–53, 2010. DOI: 10.25130/tjes.17.1.06. Disponível em: https://www.tj-es.com/ojs/index.php/tjes/article/view/540.. Acesso em: 10 sep. 2026.