Brent Yacobucci and Jasper Womach, U. S. Congressional Research Service. April 2003.
(Uncorrected Proof). (Abstract). Tad Patzek, forthcoming in Environment, Development and Sustainability, June 2003.
David Pimental, Natural Resources Research, June 2003.
Tad Patzek. Critical Reviews in Plant Sciences, 2004. Web version of article linked to here updated most recently in May 2005. Detailed review (100 pages) of the corn-ethanol fuel cycle concludes that production is a net loser from both an energy and an environmental perspective.
International Association for Energy Economics, Conference proceedings. December 4, 2003. Massachusetts Institute of Technology, Cambridge, MA.