Kamal, Sanarya K., and Ammar S. Abbas. “Textural Properties Characterization for NaX and FeX Zeolites by Nitrogen Adsorption-Desorption Technique”. Iraqi Journal of Chemical and Petroleum Engineering, vol. 23, no. 4, Dec. 2022, pp. 33-41, https://doi.org/10.31699/IJCPE.2022.4.5.