ALSHAMMARI, B. F.; CHUGHTAI, M. T. IoT Gas Leakage Detector and Warning Generator. Engineering, Technology & Applied Science Research, Greece, v. 10, n. 4, p. 6142–6146, 2020. DOI: 10.48084/etasr.3712. Disponível em: https://www.etasr.com/index.php/ETASR/article/view/3712. Acesso em: 28 jan. 2022.