@article{article49b2df1e, title = {Spectroscopic ellipsometry investigation of the redox process of polypyrrole in several aqueous solutions}, author = {Giacomini, Márcia Toline and Souza, L. M. M. and Ticianelli, Edson Antonio}, year = {1998}, doi = {10.1016/s0039-6028(98)00256-8}, journal = {Surface Science} }