D. W. Hedding, M. Greve, G. D. Breetzke, W. Nel, and B. Jansen van Vuuren, “COVID-19 and the academe in South Africa: Not business as usual”, S. Afr. J. Sci., vol. 116, no. 7/8, Jul. 2020, doi: 10.17159/sajs.2020/8298.