@article{powell_2003,  title={A secure and economical system for caging venomous snakes},  volume={9},  ISSN={1678-9199},  url={https://doi.org/10.1590/S1678-91992003000100008},  DOI={10.1590/S1678-91992003000100008},  number={1},  journal={Journal of Venomous Animals and Toxins including Tropical Diseases},  publisher={Centro de Estudos de Venenos e Animais Peçonhentos (CEVAP/UNESP)},  author={Powell, R. L.},  year={2003},  pages={111–116} }