@ARTICLE {KRISTJANSON:2005, title = {Farmers' perceptions of benefits and factors affecting the adoption of improved dual-purpose cowpea in the dry savannas of Nigeria}, author = {Kristjanson, P. and Okike, I. and Tarawali, S. and Singh, B. and Manyong, V. }, journal = {Agricultural Economics}, year = {2005}, volume = {32}, number = {2}, pages = {195--210}, }