WASET
    G. S. Ryu and  K. T. Koh and  H. Y. Kim and  G. H. An and  D. W. Seo,  Characteristic on Compressive Strength of Blast Slag and Fly Ash Hybrid Geopolymer Mortar.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2017, vol. 130(10). 1434 - 1437
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/10008116.