Cellulosic Biofuels July, 2008.
Short, bare bones look into the current state of Cellulosic plants. The 4 Page Report was published by the Environmental and Energy Study Institute and outlines federal and state money that has gone to cellulosic development along with some influential state policies.
Biofuels – At What Cost? (PDF)
by Doug Koplow, October 2006
Government support for ethanol and biodiesel in the United States. This is an excellent in depth look into the economic costs of biofuels. You can find a brief summary here.