Alfarisa, S., R.N. Safitri, and W.S.B. Dwandaru. “Effect of Catalyst Concentrations on the Growth of Carbon Nanotubes from Waste Engine Oil”. EDUCATUM Journal of Science, Mathematics and Technology 3, no. 1 (June 3, 2016): 6–12. Accessed November 22, 2024. https://ejournal.upsi.edu.my/index.php/EJSMT/article/view/39.