Masood, H. M., S. Haider, U. Javed, N. Ali, S. Hussain, and M. Ashraf. “A Technical Feasibility Study and Environmental Impacts of Green Cement Production from Recycled Fly Ash in Pakistan”. Journal of the Pakistan Institute of Chemical Engineers, vol. 49, no. 1, Apr. 2021, pp. 33-39, doi:10.54693/piche.04914.