Suripto, Suripto, and Supriyanto Supriyanto. “The Effect of the COVID-19 Pandemic on Stock Prices With the Event Window Approach: A Case Study of State Gas Companies, in the Energy Sector”. International Journal of Energy Economics and Policy 11, no. 3 (April 10, 2021): 155–162. Accessed April 27, 2024. https://www.econjournals.com/index.php/ijeep/article/view/10999.