Mohammad A. N. M. Shafiqul Karim,  Viability of Rice Husk Ash Concrete Brick/Block from Green Electricity in Bangladesh.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2016, vol. 118(10). 1297 - 1303
    [viewed 05 August 2020]. Available from: https://publications.waset.org/pdf/10005582.