PIEDADE, António. Analysis of electronic electricity meters and proposal for an intelligent prepaid system for the ende. IGS Journal: Science and Community, [S. l.], v. 1, n. 1, p. e19, 2024. Disponível em: https://revistacdugs.infoacademia.org/index.php/ojs/article/view/19. Acesso em: 8 feb. 2026.