Muyemeki, Luckson, Roelof Burger, Stuart J. Piketh, Brigitte Language, Johan P. Beukes, and Pieter G. van Zyl. “Source Apportionment of Ambient PM10−2.5 and PM2.5 for the Vaal Triangle, South Africa”. South African Journal of Science 117, no. 5/6 (May 28, 2021). Accessed April 24, 2024. https://sajs.co.za/article/view/8617.