RAHMAN, Mijanur; KARIM, Md. Masud. 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, [S. l.], v. 30, p. 103–114, 2026. DOI: 10.64102/rujssbs.0478. Disponível em: https://journal.ru.ac.bd/rujssbs/article/view/120.. Acesso em: 31 may. 2026.