@article{gheno_hasegawa_paulin filho_2007,  title={Direct probing of semiconductor barium titanate via electrostatic force microscopy},  volume={53},  ISSN={0366-6913},  url={https://doi.org/10.1590/S0366-69132007000200015},  DOI={10.1590/S0366-69132007000200015},  number={326},  journal={Cerâmica},  publisher={Associação Brasileira de Cerâmica},  author={Gheno, S. M. and Hasegawa, H. L. and Paulin Filho, P. I.},  year={2007},  month={Apr},  pages={200–204} }