@article{fraygola_coelho_eiras_2013,  title={Dielectric study at microwave frequencies of phase transitions in multiferroic ceramics},  volume={16},  ISSN={1516-1439},  url={https://doi.org/10.1590/S1516-14392013005000113},  DOI={10.1590/S1516-14392013005000113},  number={5},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Fraygola, B. and Coelho, Adelino A. and Eiras, J. A.},  year={2013},  month={Sep},  pages={1133–1139} }