@article{caldeira_vidigal_simpson_carvalho_2001,  title={Genetic variability in Brazilian populations of Biomphalaria straminea complex detected by simple sequence repeat anchored polymerase chain reaction amplification},  volume={96},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02762001000400016},  DOI={10.1590/S0074-02762001000400016},  number={4},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Caldeira, Roberta L and Vidigal, Teofânia HDA and Simpson, Andrew JG and Carvalho, Omar S},  year={2001},  month={May},  pages={535–544} }