Annual Review of Research and Development . American Solar Energy Society. Considerations on the Market for Biomass Power Technologies . National Renewable Energy Laboratory. First value for biomass represents total externalities without carbon dioxide credits for carbon dioxide absorbed in the growing of the plant matter.
Second value assumes offsets.
Institute for Local Self-Reliance. Washington, D.C. 1992. Biomass Combustion Technologies for Power Generation . First Biomass Conference of the Americas. September 1993 and George A. Wiltsee Jr.