Gulumian, Mary, Eileen Kuempel, and Kai Savolainen. “Global Challenges in the Risk Assessment of Nanomaterials: Relevance to South Africa”. South African Journal of Science 108, no. 9/10 (September 3, 2012): 9 Pages. Accessed May 3, 2024. https://sajs.co.za/article/view/9784.