Ranjan, Alok, Arshad Ayub, Abhishek Kumar, Sanjay Pandey, Pragya Kumar, and Neeraj Agarwal. “Impact of Lockdown 1.0-4.0 on Spread of COVID-19 Pandemic in India”. Indian Journal of Community Health 32, no. 3 (September 30, 2020): 598–600. Accessed March 29, 2024. https://iapsmupuk.org/journal/index.php/IJCH/article/view/1880.