@ARTICLE {MANDA:2019, title = {Adoption and ex-post impacts of improved cowpea varieties on productivity and net returns in Nigeria}, author = {Manda, J. and Alene, A. and Hirpa Tufa, A. and Abdoulaye, T. and Kamara, A. and Olufajo, O. * and Boukar, O. and Manyong, V. }, journal = {Journal of Agricultural Economics}, year = {2019}, pages = {1--19}, issn = {0021-857X}, note = {SAHub; WAHub; Science Area; SSAB; PPPH; BPB; CRP Grain Legumes; Cowpea; First published 02 May 2019}, url = {https://doi.org/10.1111/1477-9552.12331}, doi = {10.1111/1477-9552.12331}, }