Batista, Rodrigo de Abreu, Daniela D. S. Bagatini, and Rejane Frozza. “Automatic Classification of NCM Codes Using the Naïve Bayes Algorithm”. iSys - Journal of Information Systems 11, no. 2 (June 30, 2018): 4–29. Accessed April 21, 2026. https://journals-sol.sbc.org.br/index.php/isys/article/view/361.