1. Fireside Slagging;Bryers;Fouling, and High-Temperature Corrosion of Heat - Transfer Surface due to Impurities in Steam-Raising Fuels, Progress in Energy and Combustion Science,,vol,1996
2. Properties of Coal and Impurities in Relation to Preparation;Yancey,1968
3. Relations between ash yield and chemical and mneral composition of coals;Vassilev;Fuel,1997
4. Influence of mineral and chemical composition of coal ashes on their fusibility;Vassilev;Fuel,1995
5. ASTM D 1857-68 Standard Test Method for Fusibility of Coal and Coke Ash. 1985 Annual Book of Standards. Vol 05.05, Gaseous Fuels, Coal and Coke, Atmospheric Analysis, American Society for Testing and Materials, Philadelphia, 298.