FU, C, JR Mielenz, X Xiao, Y Ge, CY Hamilton, M Rodriguez Jr., F Chen, M Foston, A Ragauskas, J Bouton, RA Dixon and Z-Y Wang. 20100. Genetic manipulation of lignin reduces recalcitrance and improves ethanol production from switchgrass. Proceedings of the National Academy of Science of the United States, available at:, verified 02/25/11.

Ginder, R. 2007. Potential infrastructure constraints on current corn-based and future biomass based U.S. ethanol production. Department of Economics Working Paper Series, Iowa State University, Ames, Iowa. Available at:, verified 2/21/11.

Gordon, DR, KJ Tancig, DA Onderdonk and CA Gantz. 2010. Assessing the invasive potential of biofuel species proposed for Florida and the United States using the Australian Weed Risk Assessment. Biomass and Bioenergy:74-79.

Hahn-Hagerdal, B, ME Himmel, C Somerville and C. Wyman. 2008. Welcome to Biotechnology for Biofuels. Biotechnology for Biofuels 1:1.

Jakubowski, AR, MD Casler and RD Jackson. 2010. The benefits of harvesting wetland invaders for cellulosic biofuel: an ecosystem services perspective. Restoration Ecology 18:789-795.

Krishnakumar, P and KE Ilelji. In press. A comparative analysis of the economics and logistical requirements of different biomass feedstock types and forms for ethanol production.  Applied Engineering in Agriculture.

Lobell, DB, KG Cassman and CB Field. 2009. Crop yield gaps: their importance, magnitudes and causes.  Annual Review of Environmental Resources 34:179-204.

McLaughlin SB and LA Kszos. 2005. Development of switchgrass (Panicum virgatum) as a bioenergy feedstock in the United States. Biomass and Bioenergy 28:515-535.

National Corn Growers Association. 2011. NCGA pleased with full deregulation of corn amylase.  Available at: , verified 02/25/11.

National Renewable Energy Laboratory (NREL), U.S. Dept. of Energy. 2007.  Research advances: cellulosic ethanol. NREL/BR-510-40742.  Available at:, verified 2/17/11.

North American Millers’ Association. 2011. NAMA disappointed with USDA decision to deregulate 3272 amylase corn. Available at:, verified 01/25/11.

Perlack et al. 2005. Biomass as feedstock for a bioenergy and bioproducts industry: the technical feasibility of a billion-ton annual supply. DOE/GO-10200502135. Oak Ridge, TN: US DOE. Available at:

Raghu, S, RC Anderson, CC Daehler, AS David, RN Widenmann, D Simberloff and RN Mack. Adding biofuels to the invasive species fire? Science 313:1742.

Rentizelas, AA, AJ Tolis and IP Tatsiopoulos. 2009. Logistics issues of biomass: the storage problem and the multi-biomass supply chain. Renewable and Sustainable Energy Reviews 13:887-894.

Richard, TL. 2010. Challenges in scaling up biofuels infrastructure. Science 329:793-796.

Tyndall, JC, LA Schulte, RB Hall and KR Grubh. In press. Woody biomass in the Cornbelt? Constraints and opportunities in the supply. Biomass and Bioenergy (2011), doi:10.1016/j.biombioe.2010.12.028.