1.
Ehtemami N, Agheli LA, Peykarjou K. Examining the Effects of the COVID-19 Crisis, Financial Stress, and Oil Price Volatility on Stock Return Volatility of Pharmaceutical Companies During Recession and Expansion Periods. JMBS. Published online March 1, 2027:1-19. Accessed June 10, 2026. https://journalmbs.com/index.php/jmbs/article/view/279