@article{article19939844,
title   = {A new simultaneous spectrophotometric method for determination of iron(II) and iron(III) in natural waters},
author = {Areias, Madalena Carneiro da Cunha and Terra, Lúcia Helena Silveira Ávila and Gaubeur, Ivanise and Suárez-Iha, Maria Encarnación Vazquez},
year = {2001},
journal   = {Spectroscopy Letters}
}