Le, Tam, Tung Nguyen, Thuy Le, and Nhat Pham. 2022. “Effect of Ultrasound on Synthesis of Zeolite A from Coal Fly Ash”. VNUHCM Journal of Earth Science and Environment 6 (2), 600-608. https://doi.org/https://doi.org/10.32508/stdjsee.v6i2.708.