Ehtemami, N. ., Agheli, L. A., & Peykarjou, K. . (2027). 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. Journal of Management and Business Solutions, 1-19. https://journalmbs.com/index.php/jmbs/article/view/279