, PROF. MAHESH NAVALE, N. C. An efficient “3 phase 4 channel AC energy meter” with automatic load control and automated billing using GSM. International Journal of Engineering and Computer Science, india, v. 5, n. 1, 2017. Disponível em: http://ijecs.in/index.php/ijecs/article/view/337. Acesso em: 3 may. 2024.