@article{gascon_1989,  title={The tadpole of Atelopus pulcher Boulenger (Annura, Bufonidae) from Manaus, Amazonas},  volume={6},  ISSN={0101-8175},  url={https://doi.org/10.1590/S0101-81751989000200007},  DOI={10.1590/S0101-81751989000200007},  number={2},  journal={Revista Brasileira de Zoologia},  publisher={Sociedade Brasileira de Zoologia},  author={Gascon, Claude},  year={1989},  pages={235–239} }