S. Ajith, C. Jothy Hari Krishnan, E. Karthick, and Dr. P. Thirumoorthy M.E. Ph.D. “IOT Based Real-Time Monitoring System of Atmospheric Gases Using Arduino Uno”. International journal of intellectual advancements and research in engineering computations 7, no. 2 (July 15, 2021): 2322–2327. Accessed June 25, 2022. https://ijiarec.com/ijiarec/article/view/300.