@article{article09c9fd1e,
title   = {Humification degrre of soil humic acids determined by fluorescence spectroscopy},
author = {Milori, Debora Marcondes Bastos Pereira and Martin Neto, Ladislau and Bayer, Cimélio and Mielniczuk, João and Bagnato, Vanderlei Salvador},
year = {2002},
journal   = {Soil Science}
}