Rahman, Mijanur, and Md. Masud Karim. “Macroeconomic and Firm-Specific Determinants of Stock Price Volatility Before and After COVID-19: Evidence from the Pharmaceutical and Chemical Sectors of DSE”. Rajshahi University Journal of Social Science and Business Studies, vol. 30, Mar. 2026, pp. 103-14, https://doi.org/10.64102/rujssbs.0478.