@article{roula_boudeghdegh_boufafa_2009,  title={Improving usual and dielectric properties of ceramic high voltage insulators},  volume={55},  ISSN={0366-6913},  url={https://doi.org/10.1590/S0366-69132009000200014},  DOI={10.1590/S0366-69132009000200014},  number={334},  journal={Cerâmica},  publisher={Associação Brasileira de Cerâmica},  author={Roula, A. and Boudeghdegh, K. and Boufafa, N.},  year={2009},  month={Apr},  pages={206–208} }