ZAFAR, S.; MIRAJ, G.; BALOCH, R.; MURTAZA, D.; ARSHAD, K. An IoT Based Real-Time Environmental Monitoring System Using Arduino and Cloud Service. Engineering, Technology & Applied Science Research, Greece, v. 8, n. 4, p. 3238–3242, 2018. DOI: 10.48084/etasr.2144. Disponível em: https://etasr.com/index.php/ETASR/article/view/2144. Acesso em: 17 sep. 2021.