The Volatility of Market Risk in Groups of Viet Nam Listed Medicine and Medical Company Groups During and After the Financial Crisis 2007-2011. Global Journal of Management and Business Research, [S. l.], v. 13, n. 20, p. 27–34, 2013. Disponível em: https://journalofbusiness.org/index.php/GJMBR/article/view/. Acesso em: 18 oct. 2026.