1. On the glass in coal fly ashes;Hemmings;Recent advances MRS,1987
2. Fly ash as a valuable ceramic and refractory raw material;Kalwa;Energtyka,1982
3. Trace element studies in the major Tertiary and Gondwana coal fields of India;Mukherjee;Bull. Geol. Surv. India, Series A: Econ. Geol.,1982
4. The recovery of fine iron minerals from quartz and corundum mixture using selective magnetic coating;Prakash;International Journal of Mineral Processing,1999
5. NTPC experiences in ash utilisation;Trehan;Journal of coal ash Institute of India,1997