Asrari, E., and A. R. Rezaee. “Cadmium Removal from Industrial Sewage by Using Bentonite and Kaolinite Absorbent Gravels”. EQA - International Journal of Environmental Quality, vol. 54, no. 1, Jan. 2023, pp. 36-40, doi:10.6092/issn.2281-4485/16470.