@ARTICLE {AMAZA:2006p,
title = {Identification of factors that influence technical efficiency of food crop production in West Africa},
author = {Amaza, P. and Bila, Y. and Iheanacho, A. },
journal = {Journal of Agriculture in the Tropics and Subtropics},
year = {2006},
volume = {107},
pages = {137--145},
}