Feig, G., Ncipha, X., Naidoo, S., Mabaso, D., Ngcukana, N., Tshehla, C., & Masuku, N. (2014). Analysis of a period of elevated ozone concentration reported over the Vaal Triangle on 2 June 2013. Clean Air Journal, 24(1), 10–16. https://doi.org/10.17159/caj/2014/24/1.7051