Idriss, Mona T., et al. “In Vitro Antiviral Activity of Rooibos Tea (Aspalathus Linearis) Leaves Aqueous Extract Against Influenza Virus: doi.org 10.26538 Tjnpr V5i4.16”. Tropical Journal of Natural Product Research (TJNPR), vol. 5, no. 4, Mar. 2021, pp. 686-91, https://tjnpr.org/index.php/home/article/view/690.