@article{article3e6ae593,
title   = {Effects of changes in the photosynthetic photon flux density on net gas exchange of Citrus limon and Nicotiana tabacum},
author = {Pimentel, Carlos and Ribeiro, Rafael Vasconcelos and Santos, Mauro Guida dos and Oliveira, Ricardo Ferraz de and Machado, Eduardo Caruso},
year = {2004},
doi = {10.1590/S1677-04202004000200002},
journal   = {Brazilian Journal of Plant Physiology}
}