1. Mineral Impurities in Coal Combustion;Raask,1985
2. Impact of mineral impurities in solid fuel combustion;Laursen,1999
3. Remediation of ash related in pulverised coal fired boilers;Vuthaluru;Fuel,1999
4. Understanding slagging and fouling during pf combustion, IEACR/72;Couch,1994
5. Ash formation and deposition;Benson,1993