@article{gonçalves_costa_costa junior_2020,  title={Comparison of modified alpha functions of the PR-EoS for volume and enthalpy prediction of natural gases},  volume={92},  ISSN={0001-3765},  url={https://doi.org/10.1590/0001-3765202020190603},  DOI={10.1590/0001-3765202020190603},  number={3},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={GONÇALVES, ANDRÉ F. and COSTA, ANDRÉA O.S. DA and COSTA JUNIOR, ESLY F. DA},  year={2020},  pages={e20190603} }