Weigang, Li, Leonardo Deane de Abreu Sá, Geraldo Ferreira Galvão, and Rute Maria Bevilaqua. 1998. “Prediction of the Level of Paraguay River Using Neural Networks”. Pesquisa Agropecuaria Brasileira 33 (13):1791-97. https://doi.org/10.1590/S1678-3921.pab1998.v33.5059.