@ARTICLE {ALENE:2006g, title = {Farmer-to-farmer technology diffusion and yield variation among adopters: the case of improved cowpea in northern Nigeria}, author = {Alene, A. and Manyong, V. }, journal = {Agricultural Economics}, year = {2006}, month = {September}, volume = {35}, number = {2}, pages = {203--211}, issn = {0169-5150}, note = {SAHub; CRP Grain Legumes; Cowpea}, }