1. Policy Brief,2008
2. Dryland agriculture in Mexico and the U.S. Southern Great Plains;Baumhardt,2006
3. Biodiesel Myths Busted;Biodiesel Board,2009
4. Biofuels in developing countries;Bekunda,2009
5. Farm futures. Bringing agriculture back to U.S. foreign policy;Bertini;Foreign Affairs,2009