“The Volatility of Market Risk in Groups of Viet Nam Listed Medicine and Medical Company Groups during and after the Financial Crisis 2007-2011” (2013) Global Journal of Management and Business Research, 13(C7), pp. 27–34. Available at: https://journalofbusiness.org/index.php/GJMBR/article/view/1024 (Accessed: 2 September 2026).