Mosotho, Moshe G., Roelf D. Strauss, Rendani R. Nndanganeni, and Jacobus P. van den Berg. “The North-West University’s High Altitude Radiation Monitor Programme”. South African Journal of Science 117, no. 1/2 (January 29, 2021). Accessed May 18, 2022. https://sajs.co.za/article/view/7561.