@article{article9efd217b,
title   = {A green analytical procedure for determination of copper and iron in plant materials after cloud point extraction},
author = {Silva, Sidnei Gonçalves da and Oliveira, Pedro Vitoriano de and Rocha, Fabio Rodrigo Piovezani},
year = {2010},
doi = {10.1590/s0103-50532010000200007},
journal   = {Journal of the Brazilian Chemical Society}
}