WASET
    O. Alelweet and  S. Pavia,  An Evaluation of the Feasibility of Several Industrial Wastes and Natural Materials as Precursors for the Production of Alkali Activated Materials.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2019, vol. 156(12). 734 - 741
    [viewed 07 May 2024]. Available from: https://publications.waset.org/pdf/10010965.