@article{article5a36f6d3,
title   = {Solvent extraction-spectrophotometric determination of nickel(II) in natural waters using di-2-pyridyl ketone benzoylhydrazone},
author = {Terra, Lúcia Helena Silveira Ávila and Areias, Madalena Carneiro da Cunha and Gaubeur, Ivanise and Suárez-Iha, Maria Encarnación Vazquez},
year = {1999},
journal   = {Spectroscopy Letters}
}