@article{articleeb40ced7,
title   = {Photosynthesis, chlorophylls, and SPAD readings in coffee leaves in relation to nitrogen supply},
author = {Reis, André Rodrigues dos and Favarin, José Laércio and Malavolta, Eurípedes and Lavres Junior, José and Moraes, Milton Ferreira},
year = {2009},
journal   = {Communications in Soil Science and Plant Analysis}
}