WASET
Khan, S. , Ayub, T. , Shafiq, N. (2017). 'Comparison of Physical and Chemical Properties of Micro-Silica and Locally Produced Metakaolin and Effect on the Properties of Concrete'. World Academy of Science, Engineering and Technology, Open Science Index 128, International Journal of Civil and Environmental Engineering, 11(8), 1085 - 1099.