K. Nakano, O. Ishibashi, Y. Sumiya, K. Tateishi, Y. Miyazaki, K. Watanabe, T. Osaki, H. Hasuo, Trial Manufacture of Functionally Graded Commutator Mado from Copper and Resin, Blucher Material Science Proceedings, Volume 1, 2014, Pages 46-49, ISSN 23589337, http://dx.doi.org/10.5151/matsci-mmfgm-062-f (www.proceedings.blucher.com.br/article-details/trial-manufacture-of-functionally-graded-commutator-mado-from-copper-and-resin-10811) Palavras-chave:: ;