@article{article8170033e,
title   = {Multiyear analysis of amazonian biomass burning smoke radiative},
author = {Procopio, A S and Artaxo Netto, Paulo Eduardo and Kaufman, Y J and Remer, L A and Schafer, J S and Holben, B N},
year = {2004},
journal   = {Geophysical Research Letters,}
}