Nguyen, Thi To Yen, Phung Anh Nguyen, Thi Thuy Van Nguyen, Tri Nguyen, & Ky Phuong Ha Huynh. "Adsorption of Cr(VI) by material synthesized from red mud and rice husk ash." Vietnam Journal of Science, Technology and Engineering [Online], 60.4 (2018): 3-7. Web. 26 Mar. 2019