1. Downgrading Recent Estimates of Land Available for Biofuel Production Fritz, Steffen; See, Linda; Velde, Marijn van der; Nalepa, Rachel A.; Perger, Christoph; Schill, Christian; McCallum, Ian; Schepaschenko, Dmitry; Kraxner, Florian; Cai, Ximing; Zhang, Xiao; Ortner, Simone; Hazarika, Rubul; Cipriani, Anna; Bella, Carlos Di; Rabia, Ahmed H.; Garcia, Alfredo; Vakolyuk, Mar'yana; Singha, Kuleswar; Beget, Maria E.; Erasmi, Stefan; Albrecht, Franziska; Shaw, Brian; Obersteiner, Michael 2012 Articles Renewable energy sourcesLand use--PlanningGeographic information systems