@article{rodrigues_prudente_2011,  title={The snake assemblage (Squamata: Serpentes) of a Cerrado-Caatinga transition area in Castelo do Piauí, state of Piauí, Brazil},  volume={28},  ISSN={1984-4670},  url={https://doi.org/10.1590/S1984-46702011000400005},  DOI={10.1590/S1984-46702011000400005},  number={4},  journal={Zoologia (Curitiba)},  publisher={Sociedade Brasileira de Zoologia},  author={Rodrigues, Francílio da Silva and Prudente, Ana Lúcia da Costa},  year={2011},  month={Aug},  pages={440–448} }