@ARTICLE {EAGLESHAM:1981,
title = {Improving the nitrogen nutrition of maize by intercropping with cowpea},
author = {Eaglesham, A. R. J. and Ayanaba, A. and Rao, V and Eskew, D. L. },
journal = {Soil Biology and Biochemistry},
year = {1981},
volume = {13},
pages = {169--171},
}