1. U.S. Department of Energy “Breaking the Biological Barriers to Cellulosic Ethanol ” June 2006 http://genomicsgtl.energy.gov/biofuels/b2bworkshop.shtml.
2. National Science Foundation “Breaking the Chemical and Engineering Barriers to Lignocellulosic Biofuels: Next Generation Hydrocarbon Biorefineries ” March 2008 www.ecs.umass.edu/biofuels/roadmap.htm.
3. National Renewable Energy Laboratory “A Look Back at the U.S. Department of Energy's Aquatic Species Program: Biodiesel from Algae ” July 1998 www.nrel.gov/docs/legosti/fy98/24190.pdf.
4. See the EPA/DOE-sponsored Web site www.fueleconomy.gov.
5. Biomass Research and Development Board National Biofuels Action Plan October 2008 www1.eere.energy.gov/biomass/pdfs/nbap.pdf.