1. Overend RP. Direct combustion of biomass. Renewable Energy sources charged with energy from the sun and originated from earth moon interaction. 〈http://www.eolss.net/sample-chapters/c08/e3-08-01-04.pdf〉.
2. Biomass conversion processes;Kucuk;Energy Conversat Manag,1997
3. Biomass – resource for sustainable development;Pathak;Int J Adv Res Technol,2013
4. Energy and fuel wood. Centre for energy research;Sims,2003
5. Ravindranath D, Rao SSN. Bioenergy in India: Barriers and policy options. United Nations Development Programme, India. 〈http://www.indiaenvironmentportal.org.in/files/BioenergyIndia.pdf〉.