Suripto S, Supriyanto S. 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. IJEEP [Internet]. 2021 Apr. 10 [cited 2024 Nov. 9];11(3):155-62. Available from: https://econjournals.org.tr/index.php/ijeep/article/view/10999