Reproducibility tests of films containing ormosil of titania nanoparticles according to their photochromic activity - Souza, Luciana Valgas de; Gonçalves, Lidiane Patrícia; Rodrigues Filho, Ubirajara Pereira (Workshop da Rede de Nanotecnologia em Filmes Finos - Rede de nBioNet, 2011)