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2. Larson E. “A review of LCA studies on liquid biofuels for the transport sector ” Scientific and Technical Advisory Panel of the Global Environment Facility (STAP) workshop on Liquid Biofuels 29 August to 1 September 2005 New Delhi India; http://stapgef.unep.org/docs/folder.2005-12-07.8158774253/folder.2005-12-08.9446059805/.
3. Elsayed M. A., Mathews R., Mortimer N. D., Carbon and Energy Balances for a Range of Biofuel Options (Resources Research Institute, Sheffield Hallam University, Sheffield, UK, 2003).
4. To sink or burn? A discussion of the potential contributions of forests to greenhouse gas balances through storing carbon or providing biofuels
5. International Energy Authority Biofuels for Transport: An International Perspective (IEA Paris France 2004) chap. 6; www.iea.org/textbase/nppdf/free/2004/biofuels2004.pdf.