@ARTICLE {BERKHOUT:2011,
title = {Heterogeneity in farmers' production decisions and its impact on soil nutrient use: results and implications from northern Nigeria},
author = {Berkhout, E. and Schipper, R. A. and van Keulen, H. and Coulibaly, O. },
journal = {Agricultural Systems},
year = {2011},
month = {January},
volume = {104},
number = {1},
pages = {63--74},
issn = {0308-521X},
doi = {10.1016/j.agsy.2010.09.006},
}