1. Green energy: biomass processing and technology;Varma,2003
2. Biomass, energy and envirnoment, A developing country perspective from India;Ravindranath,1996
3. Biomass conversion processes for energy and fuel;Sofer,1981
4. Forest energy plantations: an international perspective;Cocklin;Geoforum,1985
5. Silviculture biomass farms;Inman,1977