Vergara-Parente, J. E., M. Marmontel, J. C. R. Silva, and F. B. Sá. “Growth Curve of Free-Ranging Trichechus Inunguis”. Biota Neotropica, vol. 10, no. 3, Sept. 2010, //www.biotaneotropica.org.br/BN/article/view/637.