I. Santos, A. Loula, G. Giraldi, G. Miranda Junior, and P. Rodrigues. " Variational Method Integrating Edge Detection and Smoothing in Digital Images", in Anais do XV Workshop de Visão Computacional, São Bernardo do Campo, 2019, pp. 1-6, doi: https://doi.org/10.5753/wvc.2019.7619.