@article{kellner_2009,  title={A quantitative method to establish the clinical evolution of HIV infected patients and the reproductive biology of an echinoid species from Brazil},  volume={81},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652009000100001},  DOI={10.1590/S0001-37652009000100001},  number={1},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={Kellner, Alexander W. A.},  year={2009},  month={Mar},  pages={1–2} }