H. ÇALIK and M. S. YAVUZ, “Pricing of Merger and Acquisition Announcements During the COVID-19 Period: The Role of Volatility Regimes in Borsa Istanbul”, Üçüncü Sektör Sosyal Ekonomi Dergisi, vol. 61, no. 3, pp. 3754–3773, Sep. 2026, doi: 10.63556/tisej.2026.1886.