@article{gouveia_hokka_badino-jr_2003,  title={The effects of geometry and operational conditions on gas holdup, liquid circulation and mass transfer in an airlift reactor},  volume={20},  ISSN={0104-6632},  url={https://doi.org/10.1590/S0104-66322003000400004},  DOI={10.1590/S0104-66322003000400004},  number={4},  journal={Brazilian Journal of Chemical Engineering},  publisher={Brazilian Society of Chemical Engineering},  author={Gouveia, E.R. and Hokka, C.O. and Badino-Jr, A.C.},  year={2003},  month={Oct},  pages={363–374} }