@INBOOK {WALKER:2015a, title = {Varietal adoption, outcomes and impact.}, author = {Walker, T. S. and Alwang, J. and Alene, A. and Ndjuenga, J. and Labarta, R. and Yigezu, Y. and Diagne, A. and Andrade, R. and Andriatsitohaina, R. M. and De Groote, H. and Mausch, K. and Yirga, C. * and Simtowe, F. and Katungi, E. and Jogo, W. and Jaleta, M. and Pandey, S. and Charyulu, D. }, year = {2015}, pages = {388--405}, chapter = {19}, publisher = {CGIAR and CABI}, address = {Montpellier, France and Oxfordshire, UK}, isbn = {978-1-78064-401-1}, note = {In: Crop improvement, adoption, and impact of improved varieties in food crops in sub-Saharan Africa, edited by Walker, T.S., Alwang, J.}, url = {http://www.cabi.org/cabebooks/ebook/20153367555}, doi = {10.1079/9781780644011.0388}, }