Stock Returns of Pharmaceutical Companies during COVID-19. AJAR, [S. l.], v. 6, n. 02, p. 116–128, 2023. DOI: 10.35129/ajar.v6i02.384. Disponível em: https://ojs.feb.uajmks.ac.id/index.php/AJAR/article/view/384. Acesso em: 4 nov. 2026.