1. Who will control ethanol’s future?;Brasher;The Des Moines Register,2006
2. The bioeconomy in Iowa: local conversations;Euken,2007
3. Iowa farm and rural life poll 2007 survey report on Iowa farmers’ views on the bioeconomy;Arbuckle,2008
4. As industry flows out, outside investment flows in;Lavigne;Des Moines Register,2007
5. Biofuels for transport: global potential and implications for energy and agriculture;Worldwatch Institute,2006