1. Regan JW. Impact of coal characteristics on boiler design. In: coal technology ’82 5th international coal utilization exhibition and conference. 1982.
2. Smith KL. The structure and reaction processes of coal. The Plenum chemical engineering series, New York: Plenum Press. 1994; xiv: p. 471.
3. Ash fusion temperatures and the transformations of coal ash particles to slag;Gupta;Fuel Process Technol,1998
4. Zbogar Shedding of ash deposits;Zbogar;Prog Energy Combust Sci,2009
5. Loo SV, Koppejan J. Handbook/sjaak. The handbook of biomass combustion and co-firing. Earthscan; 2008. p. 442.