BLUME, M. E.; KEIM, D. B.; PATEL, S. A. Returns and Volatility of Low-Grade Bonds 1977-1989. Financial Services Review, [S. l.], v. 1, n. 2, p. 180, 1991. DOI: 10.1016/1057-0810(91)90040-6. Disponível em: https://openjournals.libs.uga.edu/fsr/article/view/3687. Acesso em: 21 nov. 2024.