@article{meza_gratens_jardim_ben-dor_2002,  title={Preparation and general physical properties of polycrystalline PrBa2Cu3O7-y obtained from sol-gel precursors},  volume={32},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332002000400010},  DOI={10.1590/S0103-97332002000400010},  number={3},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Meza, V. A. and Gratens, X. and Jardim, R. F. and Ben-Dor, L.},  year={2002},  month={Sep},  pages={731–738} }