Development of a Low-Power, Low-Cost Electric Energy Meter Reader with Prepaid Scratch Card Billing System. International Journal of Food and Nutritional Sciences, [S. l.], v. 12, n. 7, p. 384–389, 2023. Disponível em: https://www.ijfans.org/index.php/Journal/article/view/3001. Acesso em: 12 aug. 2026.