Özcan, Sami, Murat Serçemeli, and Ali Kemal Çelik. “Analyzing the Effects of Covid-19 Pandemic on the Financial Performance of Turkish Listed Companies on Borsa Istanbul Using the Entropy-Based Grey Relational Analysis”. International Journal of Economics and Financial Issues 14, no. 5 (September 6, 2024): 109–124. Accessed December 22, 2024. https://econjournals.com.tr/index.php/ijefi/article/view/16430.