Structure-property relationship of new polyimide-organically modified silicate-phosphotungstic acid hybrid material system - Ferreira, Fábio A. S.; Amaral, Thiago; Ysnaga, Orlando Armando Elguera; Silva, Marcelo de Assumpção Pereira da; Lopes, José H.; Lewicki, James P.; Worsley, Marcus A.; Schneider, José Fabian; Tremiliosi Filho, Germano; Rodrigues Filho, Ubirajara Pereira (Journal of Materials Science, 2016)