@article{barreiro_vieira_2002,  title={
     },  volume={25},  ISSN={0100-4042},  url={https://doi.org/10.1590/S0100-40422002000800001},  DOI={10.1590/S0100-40422002000800001},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Barreiro, Eliezer J. and Vieira, Paulo Cezar},  year={2002},  month={May} }