G. Siva Chidambaram, M. Natarajan, V. Karthik, K. Vivek. “INVESTIGATION ON STRENGTH PROPERTIES OF FLYASH BASED GEOPOLYMER CONCRETE AND PARTIAL REPLACEMENT OF FINE AGGREGATE WITH M-SAND”. Pakistan Journal of Biotechnology, vol. 15, no. 4, June 2018, pp. 1003-5, https://pjbt.org/index.php/pjbt/article/view/456.