M. Si-Ahmed and  A. Belakrouf and  S. Kenai,  Influence of Metakaolin on the Performance of Mortars and Concretes.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2012, vol. 71(11). 1010 - 1013
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/4209.