WASET
    Nwakaego C. Onyenokporo,  Supplementary Cementitious Materials as Sustainable Partial Replacement for Cement in the Building Industry.   journal   = {International Journal of Architectural and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2021, vol. 176(8). 407 - 417
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10012226.