@article{coelho_smatresk_2003,  title={Resting respiratory behavior in minimally instrumented toads - effects of very long apneas on blood gases and pH},  volume={63},  ISSN={1519-6984},  url={https://doi.org/10.1590/S1519-69842003000100006},  DOI={10.1590/S1519-69842003000100006},  number={1},  journal={Brazilian Journal of Biology},  publisher={Instituto Internacional de Ecologia},  author={Coelho, F. C. and Smatresk, N. J.},  year={2003},  month={Feb},  pages={35–45} }