Suripto, S., & Supriyanto, S. (2021). 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(3), 155–162. Retrieved from https://econjournals.net.tr/index.php/ijeep/article/view/10999