WONG, K. L. .; DANIKAS, M. Functionally Graded Materials (FGM) for Spacers in Gas Insulated Systems: A Concise Review and Some Comments. Engineering, Technology & Applied Science Research, Greece, v. 11, n. 6, p. 7887–7891, 2021. DOI: 10.48084/etasr.4482. Disponível em: https://www.etasr.com/index.php/ETASR/article/view/4482. Acesso em: 25 jun. 2022.