Kabir, M., Kabir, M., Nigar, F., Ahmed, S., Mustafa, A. and Ahsan, M. (2013) “Preparation and characterization of rice husk ash (RHA)-TiO2 / ZnO composites and its application in treating effluents from textile industries”, Bangladesh Journal of Scientific and Industrial Research, 47(4), pp. 445–448. doi: 10.3329/bjsir.v47i4.14075.