S. Mhlanga, K. Mondal, N. Naidoo, M. Witcomb, and N. Coville, “Synthesis and study of carbon microspheres for use as catalyst support for cobalt”, S. Afr. J. Sci., vol. 105, no. 7/8, Jan. 2010, Accessed: Nov. 22, 2024. [Online]. Available: https://sajs.co.za/article/view/10292