@ARTICLE {AJEIGBE:2010a,
title = {On-farm evaluation of improved cowpea-cereals cropping systems for crop-livestock farmers: cereals-cowpea systems in Sudan savanna zone of Nigeria},
author = {Ajeigbe, H. and Singh, B. B. and Ezeaku, I. and Adeosun, J. O. *},
journal = {African Journal of Agricultural Research},
year = {2010},
volume = {5},
number = {17},
pages = {2297--2304},
issn = {1991-637X},
}