@article{freitas_paula_cariello_1997,  title={The Influence of Self-fertilization performance and Copulation Behaviour in Reproduction by Cross-fertilization in Groups of Biomphalaria tenagophila (Mollusca, Planorbidae)},  volume={92},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761997000600003},  DOI={10.1590/S0074-02761997000600003},  number={6},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Freitas, June Springer de and Paula, Débora Pires and Cariello, Mariana Otero},  year={1997},  month={Nov},  pages={739–743} }