Dr. Leena Sharma, Aditya V. Yadav, Shravani P. Ahirrao, Varun S. Manik, and Aman S. Ramani, “Stock Market Analysis of 10 Different Countries in the Period of Disease COVID-19”, int. j. eng. mgmt. res., vol. 10, no. 4, pp. 15–19, Aug. 2020.