Uzochukwu, John Sunday, Onu Chijioke Elijah, Ohale Pascal Enyinnaya, N. Nweke Chinenye, Madiebo Emeka Michael, and John Chioma Mary. “Mathematical and Statistical Process Modeling of Hydrochloric Acid Leaching of Iron-Oxide Impurity from Inyi Kaolin: Response Surface Methodology”. International Journal of Modern Developments in Engineering and Science 2, no. 8 (August 12, 2023): 7–14. Accessed May 20, 2024. https://journal.ijmdes.com/ijmdes/article/view/168.