@article{fontoura_braun_milani_2009,  title={Estimating size at first maturity (L50) from Gonadossomatic Index (GSI) data},  volume={7},  ISSN={1679-6225},  url={https://doi.org/10.1590/S1679-62252009000200013},  DOI={10.1590/S1679-62252009000200013},  number={2},  journal={Neotropical Ichthyology},  publisher={Sociedade Brasileira de Ictiologia},  author={Fontoura, Nelson F. and Braun, Aloísio S. and Milani, Paulo Cesar C.},  year={2009},  month={Apr},  pages={217–222} }