V. K. Bansal and  M. Kumar and  P. P. Bansal and  A. Batish,  Utilization of Industrial Byproducts in Concrete Applications by Adopting Grey Taguchi Method for Optimization.   journal   = {International Journal of Structural and Construction Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2018, vol. 144(12). 1165 - 1176
    [viewed 22 November 2019]. Available from: https://publications.waset.org/pdf/10009864.