Kai, R. F., M. Scholes, S. J. Piketh, and R. J. Scholes. “Analysis of the First Surface Nitrogen Dioxide Concentration Observations over the South African Highveld Derived from the Pandora-2s Instrument”. Clean Air Journal, vol. 32, no. 1, June 2022, doi:10.17159/caj/2022/32/1.13242.