Igreja, R., M. P. Wenger, C. J. Dias, D. K. Dasgupta, J. N. MaratMendes, J. Lewiner, D. Morisseau, and C. Alquie. "PYROELECTRICITY AND PIEZOELECTRICITY IN SOL-GEL DERIVED CERAMIC POLYMER COMPOSITES." Ise 8 - 8th International Symposium on Electrets, Proceedings (1994): 725-730.