@article{article80966b59,
title   = {Comparative procedures for the sample decomposition of rocks used in organic agriculture in the determination of Cu, Fe, Mn, and Zn by FAAS},
author = {Amorim Filho, Volnei Resta and Polito, Wagner Luiz and Gomes Neto, José Anchieta},
year = {2004},
journal   = {Atomic Spectroscopy}
}