A. Ajani, A. Adeniji, S. Ayodabo, A. Alade, T. Afolabi, and S. Ganiyu, “Removal of Diclofenac-Na from aqueous solution onto H3PO4 modified composite clay”, Chemical Bulletin of Kazakh National University, vol. 106, no. 3, pp. 20-35, Aug. 2022.