@ARTICLE {MUHR:2002,
title = {Soil mineral N dynamics and maize grain yields following Centrosema macrocarpum and Stylosanthes guianensis: effects of different improved fallow rotations and varying levels of N fertilizer to maize},
author = {Muhr, L. and Tarawali, S. and Peters, M. and Schultze-Kraft, R. },
journal = {Field Crops Research},
year = {2002},
volume = {78},
pages = {197--209},
}