Venkitasamy, S., B. Vijay Bhaskar, and K. Muthuchelian. “Atmospheric CO2 Observations at Madurai for the Period 2003-2016”. Vayumandal, Vol. 45, no. 1, Feb. 2024, pp. 85-96, https://vayumandal.imetsociety.org/index.php/Vayumandal/article/view/78.