M.S.A.M. Anik, M.R. Islam, M.A. Iqbal, and K.M.S. Quader. “INVESTIGATION INTO POTENTIAL OF FLY ASH OBTAINED FROM COAL-BASED POWER PLANTS TO CONTRIBUTE TO SUSTAINABLE ENVIRONMENT”. GEOMATE Journal, vol. 14, no. 42, Feb. 2018, pp. 128-33, https://geomatejournal.com/geomate/article/view/790.