H. Katkhuda and  B. Hanayneh and  N. Shatarat,  Influence of Silica Fume on High Strength Lightweight Concrete.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2009, vol. 34(10). 407 - 414
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/3463.