Venter, Andrew D., et al. “Size-Resolved Characteristics of Inorganic Ionic Species in Atmospheric Aerosols at a Regional Background Site on the South African Highveld: North-West University’s Research Published in Journal of Atmospheric Chemistry”. Clean Air Journal, vol. 28, no. 2, Nov. 2018, doi:10.17159/2410-972X/2018/v28n2a8.