Shedafa, R., J. Sempombe, H. Malebo, J. Otieno, E. Kaale, M. Temu, and P. Imming. “Application of High-Performance Thin Layer Chromatography and Near Infrared Spectroscopy in the Validation of In-Use Stability of Herbal Medicines Used in the Management of Covid-19”. The East and Central African Journal of Pharmaceutical Sciences, Vol. 25, no. 1, Apr. 2023, pp. 31-40, https://uonjournals.uonbi.ac.ke/ojs/index.php/ecajps/article/view/1483.