Benedicto R. Féris, Edson. “Canceladores De Eco<br >DOI: 10.14209 Jcis.1986.2”. Journal of Communication and Information Systems 1, no. 1 (June 14, 2015). Accessed December 12, 2024. https://jcis.sbrt.org.br/jcis/article/view/118.