Aravind M, and Manojkrishnan C G. “COVID 19: Effect on Leading Pharmaceutical Stocks Listed With NSE”. International Journal of Research in Pharmaceutical Sciences 11, no. SPL1 (April 2, 2020): 31-36. Accessed October 23, 2021. https://www.pharmascope.org/index.php/ijrps/article/view/2014.