Mutanga, S. S., M. Ngungu, F. P. Tshililo, and M. Kaggwa. “Systems Dynamics Approach for Modelling South Africa’s Response to COVID-19: A ‘what if’ Scenario”. Journal of Public Health Research, Vol. 10, no. 1, Feb. 2021, doi:10.4081/jphr.2021.1897.