1. [1] Meghana P Gowda, Harshitha G Y, Jyothi K N, Srushti, Padma R “Air Quality Monitoring System” International Journal of Engineering Research & Technology (IJERT) ISSN: 2278-0181 Volume 9, Issue 12, (2021) 69 -71.
2. [2] Rani, SHOLA USHA, S. Rajarajeswari, JERRY GEORGE Jaimon, and R. O. S. H. A. N. Ravichandran. "Real-time air quality monitoring system using MQ-135 and thingsboard." Journal of critical reviews 7, no. 18 (2020): 4107-4115.
3. [3] Sindhwani, Nidhi, Rohit Anand, Rashmi Vashisth, Sudhir Chauhan, Veera Talukdar, and Dharmesh Dhabliya. "Thingspeak-based environmental monitoring system using IoT." In 2022 Seventh International Conference on Parallel, Distributed and Grid Computing (PDGC), pp. 675-680. IEEE, 2022.
4. [4] Ghael, Hirak Dipak, L. Solanki, and Gaurav Sahu. "A review paper on raspberry pi and its applications." International Journal of Advances in Engineering and Management (IJAEM) 2, no. 12 (2020): 4.
5. [5] Sajjan, Vijayakumar, and Pramod Sharma. "Research on an iot based air pollution monitoring system." Int. J. Innov. Technol. Explor. Eng 8, no. 9 (2019): 553-558.