DAS, Chandrima. A Critical Study on Portfolio Optimization of Physical Gold and its Derivatives as an Ideal Investment Choice. Indian Journal of Finance, [S. l.], v. 4, n. 12, p. 46–53, 2010. Disponível em: https://www.indianjournalofcapitalmarkets.com/index.php/IJF/article/view/72553. Acesso em: 6 aug. 2025.