Ahmed Zeki, Nada S., Yasameen M. Jaeed, and Marwa N. Abass. “The Effect of Surfactant on Zeolite Preparation from Iraqi Kaolin”. Journal of Petroleum Research and Studies 8, no. 4 (July 1, 2021): 71-86. Accessed May 25, 2022. https://jprs.gov.iq/index.php/jprs/article/view/263.