@article{bashir_raya_2007,  title={Gauge Covariance and the Chiral Condenate in QED3},  volume={37},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332007000200024},  DOI={10.1590/S0103-97332007000200024},  number={1b},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Bashir, A. and Raya, A.},  year={2007},  month={Mar},  pages={313–319} }