Cam, N. T. D., N. V. Noi, D. T. N. Lan, N. T. Hang, and D. T. Phong. “Preparation and Characterization of Organoclays Synthesized from Thanh Hoa Bentonite and Demethyl Dioctadecyl Ammonium Chloride”. Vietnam Journal of Chemistry, vol. 48, no. 5, Aug. 2012, doi:10.15625/2190.