1. Quartz, sulphates and trace elements in p.f. ash;Raask;J. Inst. Energy,1980
2. Complex sulphates in coal fired boiler plant;Adams,1963
3. External Corrosion and Deposits;Reid,1971
4. The Control of High Temperature Fireside Corrosion;Baker;CERL Memorandum RD/L/M 484,1975
5. PFA Utilization;Barber,1971