RAVINDRA, R.; BHAT, B. R. Synthesis of aligned carbon nanotubes by floating catalyst method using ferrocene. Journal of Metals, Materials and Minerals, Bangkok, Thailand, v. 21, n. 2, 2011. Disponível em: http://jmmm.material.chula.ac.th/index.php/jmmm/article/view/190. Acesso em: 1 dec. 2021.