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2. Solar coal gasification;Gregg;Solar Energy,1980
3. Solar Coal Gasification: Plant Design and Economics;Aiman,1981
4. Production of fuels from high temperature solar thermal systems-economic analysis;Lakshmanan,1980
5. W. H. Beattie, Flash pyrolysis of coal through solar heating. Proc. of 1981 Ann. Meet. Am. Section Int. Solar Energy Soc., p. 179. Newark, Delaware.