Gopi Krishna, P, K Sreenivasa Ravi, K Hari Kishore, K KrishnaVeni, K N. Siva Rao, and R D. Prasad. “Design and Development of Bi-Directional IoT Gateway Using ZigBee and Wi-Fi Technologies With MQTT Protocol”. International Journal of Engineering and Technology 7, no. 2.8 (March 19, 2018): 125–129. Accessed May 18, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/10344.