S. Ong, “Synthesis of Carbon Nanotubes using Electric Arc Furnace Slag as a Source of Catalyst”, CAC, vol. 23, no. 1, pp. 2050–2055, Jan. 2022, Accessed: May 23, 2025. [Online]. Available: https://www.ca-c.org/CAC/index.php/cac/article/view/267