Mandal, Manisha, and Shyamapada Mandal. “Detection of Transmission Change Points During Unlock-3 and Unlock-4 Measures Controlling COVID-19 in India”. Journal of Drug Delivery and Therapeutics, vol. 11, no. 2, Mar. 2021, pp. 76-86, https://doi.org/10.22270/jddt.v11i2.4600.