Frimpong, Kwame Poku, and Siaw Frimpong. “Flickering Safe Havens: Time-Varying Properties in Global Equity Markets During COVID-19 and the Russia–Ukraine War”. Economy 13, no. 2 (October 22, 2026): 63–125. Accessed October 24, 2026. https://asianonlinejournals.com/index.php/Economy/article/view/9556.