“Mathematical Modeling of Low Course of São João River Study of Saline Intrusion”. Boletim Do Observatório Ambiental Alberto Ribeiro Lamego, vol. 6, no. 2, July 2013, pp. 61-72, https://editoraessentia.iff.edu.br/index.php/boletim/article/view/2177-4560.20120015.