Sagar S, Kalappa U.P, Jyothipriya G.S, Umar Mohd Nousheen. “Performance Of Concrete By Partially Replacing Fine Aggregate With Gbs And Cement With Fly Ash”. International Journal of Advanced Science and Technology, Vol. 29, no. 7, June 2020, pp. 11119-22, http://sersc.org/journals/index.php/IJAST/article/view/27529.