E. Aravind, M.Varaprasad, and Ramu Vookanti. “Architecture and Applications of Cloud Servers Used for IoT-MQTT-Case Study”. Central Asian Journal of Theoretical and Applied Science, Vol. 2, no. 3, Mar. 2021, pp. 77-82, https://cajotas.centralasianstudies.org/index.php/CAJOTAS/article/view/103.