@ARTICLE {KAMARA:2010e, title = {A participatory evaluation of improved cowpea cultivars in the Guinea and Sudan savanna zones of north east Nigeria}, author = {Kamara, A. and Ellis-Jones, J. and Ekeleme, F. * and Omoigui, L. and Amaza, P. and Chikoye, D. and Dugje, I. *}, journal = {Archives of Agronomy and Soil Science}, year = {2010}, month = {June}, volume = {56}, number = {3}, pages = {355--370}, issn = {0365-0340}, note = {Onlne ISSN 1476-3567. Published online.}, doi = {10.1080/03650340903099692}, }