@article{Zingore_2007,
title={Soil type,
management history and current resource allocation: Three dimensions regulating variability in crop productivity on African smallholder farms},
volume={101},
ISSN={0378-4290},
url={http://dx.doi.org/10.1016/j.fcr.2006.12.006},
DOI={10.1016/j.fcr.2006.12.006},
number={3},
journal={Field Crops Research},
publisher={Elsevier BV},
author={Zingore,
S. and Murwira,
H.K. and Delve,
R.J. and Giller,
K.E.},
year={2007},
month=mar,
pages={296–305} }