@INBOOK {KRISTJANSON:2002,
title = {Evaluating adoption to new crop-livestock-soil management technologies using georeferenced village-level data: the case of cowpea in the dry savannas of West Africa},
author = {Kristjanson, P. and Okike, I. and Tarawali, S. and Kruska, R. and Manyong, V. and Singh, B. },
editor = {Barret, C. B and Place, F. and Aboud, A},
year = {2002},
type = {Natural resources managment in African agriculture},
pages = {169--180},
publisher = {CABI},
address = {Wallingford, UK},
}