Rakesh Kumar, Abhinav Singh Bhadoria, Sampurna Panda. “Covid-19: Estimation Of The Severity And Healthcare Utilization- A Model Based Analysis”. International Journal of Advanced Science and Technology, Vol. 29, no. 3, Mar. 2020, pp. 15164 -71, http://sersc.org/journals/index.php/IJAST/article/view/32456.