@ARTICLE {JAGTAP:1999e,
title = {Long-term assessment of nitrogen and variety technologies on attainable maize yields in Nigeria using CERES-maize},
author = {Jagtap, S. and Abamu, F. J. * and Kling, J. },
journal = {Agricultural Systems},
year = {1999},
volume = {60},
pages = {77--86},
issn = {0308-521X},
}