Mazumder, AZM Mainul Islam, et al. “A Comparative Study for Adsorptive Removal of Remazol Red R and Remazol Black B from Aqueous Solution by ZnO”. Dhaka University Journal of Science, vol. 66, no. 2, July 2018, pp. 121-7, doi:10.3329/dujs.v66i2.54555.