Ferdous, M. N., M. A. Islam, P. Chakrabortty, and S. Kabir. “Covid-19 Lockdown and Changes of Air Quality in the Most Polluted City of Bangladesh”. Journal of Scientific Research 13, no. 3 (September 1, 2021): 707–714. Accessed January 8, 2026. https://www.banglajol.info/index.php/JSR/article/view/50647.