@article{alves_barcelos-neto_2004,  title={On the trace anomaly and the energy-momentum conservation of quantum fields at D=2 in classical curved backgrounds},  volume={34},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332004000300033},  DOI={10.1590/S0103-97332004000300033},  number={2a},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Alves, M. and Barcelos-Neto, J.},  year={2004},  month={Jun},  pages={531–534} }