@article{casali_menezes_2010,  title={Adiabatic index of hot and cold compact objects},  volume={40},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332010000200007},  DOI={10.1590/S0103-97332010000200007},  number={2},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Casali, R. H. and Menezes, D. P.},  year={2010},  month={Jun},  pages={166–171} }