CRUZ, Rafael Cabral, Maria Luiza PORTO, Geraldo Lopes da SILVEIRA, Jussara Cabral CRUZ, Roberto Daniel PEREIRA, and Rubem Luiz DARU. 2016. “FFTSINT: A Tool for Recurrence Analysis of Peaks in the Spectral Analysis of Daily Hydrologic Series”. Brazilian Journal of Biometrics 33 (4):426-44. http://ftpnucleo.ufla.br/index.php/BBJ/article/view/37.