The economics of growing shrub willow as a bioenergy buffer on agricultural fields: A case study in the Midwest Corn Belt H Ssegane, C Zumpf, M Cristina Negri, P Campbell, JP Heavey, TA Volk Biofuels, bioproducts and biorefining 10 (6), 776-789, 2016 | 37 | 2016 |