TOMBENG, M. T. Prototype of Gas Leak Detector System Using Microcontroller and SMS Gateway. CogITo Smart Journal, [S. l.], v. 3, n. 1, p. 132–138, 2017. DOI: 10.31154/cogito.v3i1.52.132-138. Disponível em: https://cogito.unklab.ac.id/index.php/cogito/article/view/52. Acesso em: 26 jul. 2025.