@inproceedings{inproceedingsdd415326,
title   = {Different oxidation states on chromium-containing silica},
author = {Martines, Marco Antonio Utrera and Davolos, Marian Rosaly and Jafelicci Junior, Miguel and Alexiou, Anamaria Dias Pereira and Toma, Henrique Eisi},
year = {1998},
booktitle   = {Brazilian Meeting on Inorganic Chemistry}
}