Attih, E. E., . C. Usifoh, O. A. Eseyin, and H. O. Oladimeji. “Determination of Dihydroartemisinin In Bulk And Pharmaceutical Formulations By Redox Titrations And UV – Spectrophotometry Using Potassium Permanganate As Oxidimetric Reagent”. Nigerian Journal of Pharmaceutical and Applied Science Research, vol. 3, no. 2, July 2020, pp. 35-42, http://mail.nijophasr.net/index.php/nijophasr/article/view/64.