@article{freitas_lent_1938,  title={Novo nematodeo parasito de rã sul-americana},  volume={33},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761938000400004},  DOI={10.1590/S0074-02761938000400004},  number={4},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Freitas, J. F. Teixeira de and Lent, Herman},  year={1938},  pages={477–479} }