1. Reduction of thermal coals, environmental impact by nitric precombustion desulfurization;Alvarez;Environ. Sci. Technol.,1997
2. Mineralogy of Arizona;Anthony,1977
3. Bharat Coking Coal Limited (BCCL), 2003. Brief History of BCCL, Koyla Bhavan, Dhanbad, Coal India Limited, http://bccl.nic.in/About-us.htm, (accessed November 2003), pp. 1–3.
4. Thermal modeling of underground coal fires in northern China. In: Remote Sensing in Action;Cassells;Proceedings of the 21st Annual Conference of the Remote Sensing Society,1995
5. The Ambient Temperature Oxidation of Coal;Chamberlain,1971