Kalyan Kumar Moulick,  Prospective Use of Rice Husk Ash to Produce Concrete in India.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2015, vol. 99(3). 324 - 329
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/10000874.