The In-Vitro Antiviral Activity of Carissa Edulis, Tulbaghia Acutiloba, and Tetradenia Riparia on Severe Acute Respiratory Syndrome Coronavirus-2, da Silva, Carlos A., Mfengwana Polo-Ma-Abiele H., and Burt Felicity J. , Pharmacognosy Journal, January 2025, Volume 17, Issue 1, p.47-57, (2025)