@inproceedings{inproceedings87d11291,
title   = {Study of the cellulose esthers-phosphotungstic acid composite systems},
author = {Rodrigues Filho, Ubirajara Pereira and Pireaux, Jean Jacques and Plepis, Ana Maria de Guzzi and Oliveira, Francílio de C. and Imazawa, Amilcar D.},
year = {1999},
booktitle   = {Brazilian Symposium on Glasses and Related Materials}
}