HUBBARD, C. M.; WALZ, D. T. Precious Metals And Retirement Portfolio Survival Rates. Journal of Business & Economics Research (JBER), [S. l.], v. 8, n. 2, 2010. DOI: 10.19030/jber.v8i2.678. Disponível em: https://clutejournals.com/index.php/JBER/article/view/678. Acesso em: 18 jul. 2024.