R. B. N. Lekene, N. O. Ankoro, N. J. Nsami, D. Kouotou, A. N. Rahman, and K. J. Mbadcam, “Preparation of Activated Carbons based Balanites Aegyptiaca Shells by Chemical Activation: Optimization Conditions Using the Methodology of Experimental Design”, EJCHEM, vol. 1, no. 6, Dec. 2020.